Side by Side Comparison of: Logitech vs Hermitshell vs Co2Crea

Buy this. Do it. DO IT. DO IT NOW. This thing has changed my life for the better. It is very comfortable in hand and the materials are just right. After months of constant daily use, it looks just as nice as the day I bought it. There's very little indication of wear on the buttons and aside from general gunk that sticks around, it is spotless.My favorite feature is the side-scroll, which allows you to scroll horizontally using your thumb. I also really appreciate that Logitech has software that allows you to pair multiple wireless devices to a single unifying receiver, or a single device to multiple receivers. This works great with this mouse, which will remember up to three unique connections which can be easily cycled through using the button on the bottom of the device. The software is free and very simple to use. It also supports bluetooth, which means that you can easily pair it with your phone (Android, at least) or laptop without the need of a separate receiver taking up a precious USB port.Like many other mice, it also has back/forward buttons on the left side that are programmable, as well as a kind of hidden button that is right where your thumb sits. By default, this button is programmed to bring up the alt+tab window switcher in Windows, but you can use the Logitech Options software to reprogram it to do something different - I currently have mine set to minimize the active window when clicked.Another great feature specific to Logitech's higher end mice is the infinity scroll. This mouse takes it a step further by automatically unlocking the scroll wheel when it is scrolled quick enough, allowing you to scroll through massive documents or webpages much quicker than you'd otherwise be able to. You can also manually enable infinity scroll using the button on the top of the mouse. This feature can also be disabled if you're a hyper-active scroller.Battery life has been stellar even when connected via Bluetooth. I use it at least 8-10 hours a day and I can get nearly 2 full weeks on a single charge. Like most everything created in the last 5 years that doesn't start with an "i", the device uses the included micro-USB cord to charge. There is a small indicator on the left side that shows you how much battery is left and shows you when charging is complete.Unlike most of Logtiech's wireless mice, this one doesn't have a built in storage spot for the unifying receiver. Again, not a big deal if you use Bluetooth.My only real complaint is that when connected to Bluetooth, the mouse automatically "sleeps" after about a minute of inactivity and takes a second to wake back up and work again. It has never failed to connect, but it is kind of annoying.Long story short, I would buy this thing 10 times over. I have convinced at least half a dozen coworkers to buy this same mouse and they all love it.

This particular mouse was purchased because I have a large hand and its a large mouse. The mouse provides good support for the hand. I don't use any of its advanced features. The mouse moves easily on the mouse pad (a Glorious XL Heavy Gaming Mouse Mat / Pad ) and is quick and precise. I have a three 4K-monitor setup and the mouse works perfectly in this setup. The setup is using for reading, writing and data entry. It isn't used for playing games.It's been 25 days since I purchased the mouse and I just received an onscreen notice that the mouse needed to be charged for the first time since it was charged on the day I received it. Charging is easy; just plug in the cord. The mouse is still usable during charging. I'm using it that way as I write this review. I used corded mice for many years because I didn't like having the batteries run low on older wireless mice. The rechargeable feature of this mouse is nice. I use the mouse seven days a week for I would guess an average of three hours per day. The computer is on for a much longer time however since I listen to background music via the computer; perhaps eight hours per day of total on time. I thus consider the charge life to be very acceptable if it remains at the current length.Charge update: Charged the mouse based on onscreen notice on August 4, 2017. This is 40 days since the last charge.

The first week of using this mouse, I hated it and was seriously thinking about returning it. I've been using my beloved Performance MX mouse for years. But with the thumb padding worn down to the shell and the mouse wheel refusing to spin down, it had seen much better days. Not to mention the design flaw of the inevitable double click on a single click when it starts to age and is conveniently out of warranty. I had to learn how to position my hand as my thumb kept hitting the little hard plastic part where the battery charging indicator is. The thumb wheel was different and the weighted main wheel kinda freaked me out. But now, I love this mouse. I have charged it once since I've had it where my old mouse needed charging about every other day. The weighted wheel, once I got used to it, is awesome. No more scrolling for days. I can find what I need much quicker now. It feels nice in my small hand. I was a bit annoyed on having to install Logitech Options for this mouse while everything else uses Setpoint. If your going to upgrade from the Performance MX like I did, allow yourself an adjustment period of 1-2 weeks. Overall, a very solid mouse and for the best price available.

Amazing mouse. So versatile and so easy to customize with their "Logitech Options" mac application. I can customize the buttons within specific apps. Free-scroll wheel feels great and better than the previous MX Performance mouse. Clicks are solid, I especially like the feel of the plus and minus buttons on the side. One thing to note that they're laid out a bit different from the MX Performance so will take some getting used to. Side-scroll is super convenient for video-editing, for example when you're scrolling thru your timeline. Tracking is smoooooth as butter. Ergonomics are on-point for my larger-than-average hands. Good weight, does not feel cheap even though it's made of plastic. Sleek design. Bluetooth connectivity is HUGE for me bc that means no USB receiver and connects to my Macbook Pro pretty much instantly. Does not interfere with speakers or other wireless devices I use.

 I purchased this mouse as it was highly recommended by many technical people. I'm not a gamer but I was tired of buying cheap wireless mice weren't accurate and felt cheap. After fighting with the cost for a while I finally decided to go with the MX Master.

The MX Master is aimed at working professionals. It has several buttons, which work fairly well for functions in editing programs and other software. The battery usually lasts me a little over a month with daily use and it charges fairly quickly.

Overall I think it's great and I have no real gripes with it.

PROS:
Accurate
Works on multiple surfaces
Looks Great
Comfortable
Awesome adjustable scrollwheel

CONS:
Back/Forward buttons could have better placement
Thumbrest button requires a good bit of force to operate

Probably the best mouse you can buy for the price on amazon around $60-$50. I have two one for the office and one for home now. I use them both with bluetooth on the same laptop and never have to reconfigure them. I just turn it on and within a second your up and running. It is surprisingly a touch large for someone who orders large size winter gloves or extra large lifting gloves. The larger size is one of the reasons why I purchased two; so i would not have to put it in the laptop bag and see it take up too much space in a sleeker style bag. The best part to me is the functionality of the mouse with the overall design. This mouse really gives you a great feeling of control. For example, when if you want to see or switch to your background apps just press your thumb down on the jet wing and presto! all your background apps you are running pop up. it's a nice touch. You can also press the top button and switch between a smooth scroll or press it again and it's a click/tread scroll. My favorite is when you start to scroll continuously very fast down it automatically switches to a smooth super fast drop down scroll. This is great when you are in a long thread and want to get to the bottom fast or in a long playlist on spotify or something, no more waiting seconds to get to the bottom, you already there in 1 second. If I had one wish it work a little better when you want to scroll up in this feature, I feel it is not great to scroll up so much.

Overall the construction of the mouse is solid and the design is very pleasing on the eyes. As a mouse, the performance is excellent and I haven't had any issues once it's been paired with a PC.

Out of the box experience is mixed. There's no manual or quick start guide, only an infographic on the inside fold of the box that leaves out exactly how pairing the dongle is done. There's no mention anywhere of the 6th mouse button under the thumb rest, I only found it because rubber molding pops up a little for it and I tried to push the molding back down only to hear a click. I wonder how many people are completely unaware that the button even exists? The 4th and 5th buttons are utterly useless due to their size and placement so far back on the mouse. The "unique thumb wheel" is not in fact "perfect for horizontal navigation and advanced gestures". It would be better if they marketed it as "that weird cylinder that only does something in a few apps, does it poorly, and works backwards from what you'd expect".

I got mouse for working from home so I could control all the devices sitting on my desk and for the most part it's been a success. Unfortunately the button to switch devices is located on the bottom of the unit so it requires two hands to switch which is inconvenient. For whatever reason my Windows 7 laptop cannot discover this mouse when I put it into Pairing mode, my Windows 10 desktop and Macbook Pro find it immediately. Fortunately the mouse has a dongle I can use.

I'm a big fan of Logitech mice, and I've been using their products for years. I started out with the MX 1100, which, to my mind, is still the best mouse ever made. This is an excellent replacement for that mouse, and carries over many of its excellent features like a useful dual-mode scroll wheel, good weight, a responsive laser and smooth operation on difficult surfaces like unfinished wood grain.

The first thing I noticed about the mouse was its size. It has a relatively high profile, with a prominent "bump" towards the back of the mouse, so it's good for larger hands. Since it's more aggressively sculpted than many mice, so you might love it or totally hate it, depending on how much you want your mouse to fill your hand.

Definitely superior for palm-grip users, as its cross-section is a little to high for finger grips. The side scroll button is of limited usefulness, and I preferred the orientation on the original MX Revolution, but it's good to see it there anyway. The main scroll wheel has a great smooth feel to it, and it's reluctant to move on its own. The primary fast scrolling mode is great, and the click-scrolling mode is good for gaming. The weight is substantial without being tiring or heavy, and the out-of-the-box sensitivity is decently calibrated.

The back and forward buttons on the side, however, are tiny and easy to misfire. I frequently find myself hitting forward when I mean back, or having to carefully pick between the two buttons with my thumb. And the battery life is not the best, requiring recharging about once a week.

I purchased this to replace my well-worn MX1000 laser mouse, which I loved. This model has all the MX1000's bells and whistles, some of which were lost with SetPoint software upgrades that it couldn't handle as the MX series evolved, as well as a couple of additional ones. I am particular pleased with the "fine tuning" of the pointer speed and acceleration of the pointer, which has resulted in more efficient mousing.

There are a couple aspects of the Master that I am less pleased about that will be more or less important to other users. The most obvious one is the Master's size. This is a mouse designed for the average adult-sized right hand. For those with shorter- and stubbier-than average fingers—like mine—this may not be the most comfortable mouse to use. It is substantially larger than the more comfortable (for me) first-gen MX1000 it replaced. This is probably not a good mouse for kids and others with smaller hands. The other feature I have found more difficult to use is the "page forward" button. On the MX1000 the page forward and page backward buttons were separated by the application tabbing button, and so were easy to distinguish. On the Master they are together and I often find myself pressing the page backward button when I wish to page forward. To accomplish page forward effectively, I have to change my grip on the Master. I find this not only to be inefficient but given my particular hand, uncomfortable as well. Fortunately, I use the page forward button much less frequently than the page backward button, so this is a relatively minor problem for me.

Because of the Master's size and design, it is not a mouse for everyone. If it's "on-paper" capabilities are a good match for your needs, give it a test drive to see if it is right for you. It hasn't made me forget my MX1000, which was a great ergonomic fit for my hand, but on balance, the pros have outweighed the cons when I compared it with my other replacement options.

I am a long time MX Revolution fan, and held of on buying this for a while because of the initial poor reviews for OSX. My MX Revolution finally went out to pasture, so it was time to roll the dice - and I'm pleasantly surprised. This review is for MacOS Sierra 10.12.

Pros: Logitech's software appears to have matured, because last time I used LCC it was a mess. This is clean - it integrates into the OSX preferences pane and the configuration panel is easy to use. Customizing buttons is quick and easy and the available options make sense. (I like this software a LOT better than Razer's needlessly-cloud-based Synapse driver, for example.) The mouse itself has that same solid, heavy feel that the MX Revolution had, and the ability to run it corded is always a plus.

Cons: The forward/back buttons on the side could have been designed better, as it's awkward to find the two small slivers with your thumb. I'm sure it'll be better after I have time to get used to it but it's really just a lousy design choice. I also don't care for the vertical side scroll wheel - the horizontal wheel with the same ratchet feel as the primary wheel on the Rev was a lot better.

This would be 5 stars if not for the side wheel and the thumb buttons, but all in all I'm extremely happy with the Master on my Mac. I haven't tried USB Overdrive or Steermouse with it because it does everything I want it to do by default, and the driver is unobtrusive. This is an all around great mouse.

I have been a user of Logitech keyboard/mouse for 10+ years now and have been using MX series since the MX1100. I switched to Performance MX when it was released and been using that for past 5 years (2 of them due to button failures). The 2nd one gave out recently and bought the MX Master as replacement. The shape of the mouse have been changing since MX1100 and with every revision, the mouse is becoming leaner. I still have a working MX1100 and prefer the fit of that better than the Performance MX and MX Master.
Pros:
1. Mouse feels solid with a good heft to it.
2. Built-in batter lasts much longer than the AA battery in Performance MX. I'm a heavy user (10+ hrs a day) and Performance MX battery lasts only 4-5 days using a rechargeable Eneloop battery. I didn't have to charge MX master even once after 2 weeks of use and based on the battery estimate, I would guess it would have lasted for at least 30 days for me.
3. New software Logitech options is pretty good compared to Set Point.

Cons:
1. Doesn't fit in hand as well as the older versions of MX (Performance and MX1100) (May work for someone with smaller hands). I started having wrist pain with couple of days of use.
2. Didn't care much for the thumb wheel. It has a mushy feel while scrolling with no feedback(ratchet). So, doesn't give controlled operation for say, zoom/volume controls. It always ended for going over or under when scrolling.
3. The buttons next to thumb wheel or not positioned well. It feels awkward to use. I prefer the placement of these buttons in Performance MX or MX1100.
4. Logitech options Software - It doesn't support older devices. I have a K800 keyboard and that still needs the Set Point. Logitech should have one software that supports everything. I hated having to use both of them to set options for keyboard and mouse separately (and they have a annoying message every time I open them saying one of the plugged in device is not supported).

Overall, the mouse sounded very good based on specs (with speed-adaptive scroll wheel, bluetooth, connections to multiple devices etc.). While I do believe it is technologically advanced compared to previous versions, it failed in the usability and ergonomics compared to earlier versions. I have returned this mouse and gone back to my MX1100. I will use it as long as it lasts and probably get a Performance MX when it fails. My wishlist would be a MX1100 with a nano receiver.

The things that stuck out to me from this mouse is the ergonomics, it's ability to work on glass, the programable buttons, and dual bluetooth/unifier connection. Below are my pros and cons.

Pros:
- Internal battery
- 6 programable buttons
- Works on glass
- Ergonomic shape
- Bluetooth/Unifying receiver

Cons
- Scroll wheel
- Loud
- Matte texture

The things that I don't like about this mouse are mostly trivial but they're things I'm not a big fan of. The soft texture feels a bit odd on the palm area. I'd prefer if the soft texture was smooth plastic. I don't like how loud the scroll wheel is. It goes to free scroll mode when you scroll down and the locking mechanism gets annoying. If it wasn't for the texture and scroll wheel, this mouse would be a 5/5 for me.

<|> Comparing this to my Gs (G700 & G700s):
=> It is a near seamless transition between the two for fit and movement. Response time and latency are great for workstation/productivity tasks and very good for "less than professional" gaming. Wireless response time is not noticeably different than when wired.
=> The detachable cable (like the Gs) is nice, but I would prefer a design that puts less stress on the plug though. Over time, this can cause intermittent connectivity issues.
=> Battery life is just as good, if not better, than the Gs. I get several hours of continuous use on one charge without a noticeable reduction in performance.

<|> Subjective Differences:
=> The Gs change DPI using buttons to cycle between profiles. The MX uses a thumb roller for DPI change. For precision gamers and designers who need predictable interactions, this is a potential nightmare since it directly changes the DPI instead of cycling to preset levels/profiles. For casual users, this will probably be a beneficial feature since it makes it easy to make minor DPI adjustments on the fly.
=> The buttons are good, but not great. There is a tactile and audible click when the switch activated, but there is more of a travel distance than I personally prefer.

<|> Cons when compared to Gs:
=> The sticky feet on the bottom of the mouse can cause problems. The laser works great on the surface of my desk, but the feet grab hard, so fluid and precise movement is near impossible. Using a fabric or textured mouse pad/mat nullifies this problem entirely without noticeably reducing accuracy, even with precision gaming.
=> The reduction in the number of available buttons is a minor concern, depending on how you use the mouse and if you need the extra buttons.
=> The battery in the Gs is easily accessible, and thus, interchangeable. That makes it possible to carry spare batteries for quick change if needed, or for easy replacement when the battery expires. The MX battery is not easily accessible and is also proprietary. This, to me, is a major design regression when compared to the Gs.
=> The Gs have a compartment for hiding and carrying the USB dongle. This makes it easy to carry and keep track of it. The MX doesn't have any way to hide/carry the dongle in the mouse. This makes it very easy to lose it. Again, a major design regression.

<|> Conclusion
Overall, this is an EXCELLENT mouse for under $100 USD and good for workstation tasks, but serves to show that Logitech mouse design is actually getting worse rather than better.

I have been using Logitech's MX Revolution for about 5 or 6 years now, unable to switch to the successors of that particular mouse because of suggested downgrades. When the MX Master was announced and Revolution fans suggested that it could be the worthy, true successor to the MX Revolution, I pre-ordered it. Well, the mouse arrived yesterday and though I've only been using it, here are my initial reactions.

First, I do think that this is a worthy successor to the Revolution, though some things have changed. There aren't any major drawbacks in just ~24 hours of use (mostly doing web development, general browsing, on both a PC and Mac). I'm going to update this review as I use the mouse more, but here are my first reactions.

- The mouse is slightly larger than the Revolution, about the same width but slightly taller. This is fine and it's been comfortable to use coming from the MX. The contoured edges are a nice touch and don't give me a 'sweaty hand' like other contoured mice have in the past.

- The ratchet scroll / free spin scroll wheel is the single most sought after feature of this mouse, and it has a toggle button where the Revo's (useless) search button used to be. I will almost never use the ratchet click because I've gotten so used to the free spinning wheel and can't find any use for a slower scroll now that I've been using free spin for half a decade. This can also be controlled via software, so you can set it to free spin as all times and re-assign that button if you'd like. The horizontal scrolling on the scroll wheel (tilting it left/right) has been removed from the Revo. It's been replaces with another function (see 2 paragraphs down).

- Which brings me to the software called "Logitech Options" which is much improved. It's obvious that Logitech invested in this area over the years, as their old Logitech Control Center software for the Revolution was really lousy, even in 2009 it felt dated and clunky. The new application is light, only took a few seconds to download, and it highlights the areas of the mouse that you can tweak. Everything was clear and made sense to me, where as the Revo's software felt like features were hidden in bizarre menus or given annoying trademarked names so you really didn't know what they did or meant without trying them out.

- Back to the hardware, the jog dial has been replaced with a small north/south wheel on the left side of the mouse that has the right amount of tension. Out of the box, this is used to horizontal scroll, which I find only passingly useful. There just aren't that many applications (for me) where I regularly use horizontal scroll intentionally. The software allows you to re-assign this to cycle through your tabs or applications (similar to ctrl + tab for Chrome, or alt + tab for windows). The tab scrolling is nice and it works but it's not as immediate as the jog dial if you went through the work to re-assign that. But so far, tab scrolling works in Chrome, SublimeText, Dreamweaver CC (2014), and Photoshop CC (2014), which is much more support than the old jog dial implementation had. I haven't tried a tabbed piece of software that doesn't work yet. Even Lync client for Windows (with vertical tabs for conversations) works, so I'd imagine this is fairly universal support.

- One drawback is the two tiny buttons next to the jog wheel which replaced the back/forward buttons on the old Revo. These buttons are difficult to press and feel spongy because they have this diminutive design that doesn't feel great. It's tough to differentiate between them at first. Out of the box, these control back/forward in the browser and you can't map them to too many different commands (like switching tabs for instance).

- A strange new feature which I'm still undecided on is this gesture button. So, I heard this described and I wasn't sure how it would work. On the base of the mouse, say where your thumb would rest, there is a button that you can press (but it's flush with the design of the mouse) that allows you to quickly move your mouse in a particular motion to do some command. Out of the box in Windows I have it set to snap my windows left/right, and on the Mac I have it switch desktops. This works, but it's... not intuitive and honestly feels like it takes more work to feel for this button and then quickly move the mouse. One thing Logitech did well is that your mouse cursor "locks" in place while this button is held down, so it makes it more intuitive in knowing whether you're doing some gesture command. It's a nice attempt to build gestures into the mouse but it doesn't quite work like how the marketing materials want you to believe. The good thing? This can be remapped to do dozens of different commands.

- The mouse can be assigned to control up to 3 devices, which is great. I use a PC at work, I have a Mac Mini for development at home, and then a MacBook Air for browsing/light use and it's nice to have this mouse work on all 3 devices with just the click of a button (a device selector is flush with the unit on the underside).

- Syncing via bluetooth on OS X Yosemite was flawless. Connecting to the wireless dongle (the tiny one that Logitech has used for most of their devices) was equally intuitive.

- The device charges via a 3 foot USB cable which can also send a connection over. Seems like it works, not much to report here.

- Other things like precision of the pointer, etc., I'm not the best to report on... Seems fine? After years of use the MX Revolution would skip frames on me on my PC, but I think that's more related to a not-so-great work computer, rather than the mouse... but so far, so good on the MX Master. I can't comment on battery life yet, I've been using the mouse for less than 24 hours.

Conclusion:
So far, I would give this mouse 5 stars. That doesn't mean that it's perfect, for instance the gestures could be improved and I would like it if the software let you re-assign every button to do anything... As it is, some buttons can't be re-assigned to do *everything* (like switching tabs with the back/forward buttons). But, thus far, it is certainly a worthy successor to the MX Revolution and one that I have easily transitioned to.

As I continue using the mouse, I'll continue to update this.

** Update 48 Hours Later **

So, with 48 hours of fairly heavy use, the first noteworthy adjustment I made was turning *OFF* the "Smooth Scrolling" in the Logitech Options application. I was noticing that very, very subtle movements of the wheel caused a page to scroll up or down, which was only mildly annoying on a typical scrolling website, but made using any sort of mapping site (Google Maps, etc) or applications where the wheel performs some command (photoshop) frustrating. In fact, I noticed that if I just moved the mouse rapidly, the page would slowly scroll down because the mouse wheel was so sensitive with smooth scroll turned on. I turned this off and now I am happy to report consistent, predictable scrolling and no noticeable change to how it feels when I do scroll intentionally on a page.

** Update 10 business days later **

Battery life is still kicking on 2 Bars after the first full charge. I also turn it off at night when I go home (and on weekends), but use the mouse heavily from 9am to 5pm. Not sure how long the final 2 bars will last, but so far, seems like strong performance.

** Update 6+ months later **

I have two of these mice now, one for home and one for work, and I've noticed mousewheel drifting when the mouse is set to the free spin option. It's more noticeable on OS X than on Windows probably because OS X is more sensitive to track movements. Basically, on a free spin, the wheel will rebalance itself by tilting back a fraction of a spin... This can cause a page to drift back up or down in a specific direction. It's hard to explain so I've added a video of it. Looking this problem up online, Logitech has suggested turning off the freespin if you're experiencing this, but that isn't a solution to me. Dropping a star because of this annoying problem.

(Also, sorry Amazon's video compression is terrible so you can't see the details of this, but towards the end of the video the mouse wheel drifts backwards from the direction I was spinning)

(Updated 1+ year later)

Reducing the review to 3 stars because the drifting has seemingly gotten worse instead of better. I was willing to give this a chance but I'm having drifting issues on both WIndows 10, OS X, and Ubuntu. The issue is very annoying and happens almost every time I'm using the mouse. I'd actually not recommend this mouse because the issue has seemingly gotten worse either with age or with new driver updates.

I purchased this mouse because of the Bluetooth capability and the description said that it had a replaceable battery. Unfortunately, the description was for the newer model of this mouse which cost $20 more. The battery is NOT replaceable on this model. It is not even accessible. Had I known this beforehand I would not have purchased either model.The mouse connected via Bluetooth immediately and initially worked flawlessly. On the second day for some unexplained reason the cursor "froze". I was able to navigate using the keyboard cursor keys and therefore reboot which solved that issue. Two days later the cursor disappeared entirely. I connected a wired USB mouse but still had no cursor. I pressed the "Connect" button on the bottom of this mouse several times with no result. I cycled through all three connection choices a couple of times and finally got the cursor again.I am semi-invalid so am limited as to physical activity and therefore spend a lot of time on my computer. Years ago I had another Logitech mouse with a rechargeable mouse which, possibly due to heavy use, needed recharging almost daily. This is why a replaceable battery was an attractive option for me. Although thus far the battery in this mouse has not required daily charging based on the lights indicating the amount of charge it won't go much past that with my usage habits.The "Options" software is unneeded. The keyboard cursor keys are quicker and more positive that the horizontal scroll thumbwheel. The horizontal thumbwheel is too close to the Forward and Back buttons which sometimes results in some unexpected cursor behavior.On several occasions the left mouse button has been unresponsive and on several occasions would not move.I have decided to revert to the wired USB mouse that came with my computer. I have not had satisfactory service from any wireless mouse of any brand.

Want to love this mouse like I loved my G5 mouse from Logitech. but I just can't.First; this mouse's software stack is garbage. The UNICODE settings app they install with their package is ALWAYS crashing on Windows 10 64bit. It crashes on many game apps like BF1. Just garbage.Second; the mouse doesn't communicate well with the Logitech receiver. I'm not sure what's going on but this is a fresh Windows 10 install and I'm constantly getting frustrated with "hesitation" of the mouse pointer. IE a minor move of the mouse should result in a movement of my mouse cursor. If I were to guess; the unifying receiver stack must be relying heavily on getting "bandwidth" to do some kind of processing. If I run my CPU at 100% the hesitation/lag is really bad. It's almost like the unifying receiver doesn't use the Interrupt system well enough or there is a power management issue with the mouse / receiver.Third; this mouse is advertised as Bluetooth compatible. It's not. After pairing with my BT enabled desktop (intel WIFI card w/ BT 4.0); it frequently drops the connection and won't re-pair with the computer. Not sure why. As a result; I had to use the unifying receiver.It took me a while to figure out why the mouse was so frustrating that I couldn't return it to Amazon.My advice; is to avoid this mouse.

After two full months of use:PROS: Tracks pretty well on some surfaces, decently comfortable in the hand.CONS: SHORT, UNPREDICTABLE BATTERY LIFE. About a week or less in normal use. If you miss a short warning flash on the screen that the battery is running low, then later with no additional warning the mouse goes dead all of a sudden. Then it's part of a day of dragging around a stiff charging cable on the desktop until charging is complete.Does not track on quite a few surfaces; finicky.The "spin to scroll fast" feature works after a fashion, but it's kind of hard to control how fast and how far it goes. Stopping the spinning with the touch of a finger has kind of a hard mechanical feel to it.Don't get me wrong, this is not a terrible mouse. But the engineering of battery life and tracking on some surfaces leaves a lot to be desired.PLEASE BRING BACK the MX 1100! What a great mouse that was.Logitech: PLEASE do not make mice with a short battery life. Good for the environment to use rechargeable mice, but you must engineer the mouse to last longer AND give adequate prior warning in a persistent fashion so users are not suddenly caught mid-computing with no working mouse.

I was excited to buy this mouse because of the new color. It looks better than the original color. I received the mouse, and I was impressed with its build quality and feel. It connected via Bluetooth with no problems and the first couple of days were great. A week later the mouse started to lose connection and then regained it. I thought it was because it went to sleep after not using it for a while. Then it began to disconnect while in use. I do a lot of design and illustration work. One of the most important things for a designer is to have a tool they can rely on especially on those critical moments when you have to crank the work out to meet deadlines. This mouse is a disappointment.I went online and searched my particular problem and saw I was not the only one with this issue. I even came across a Logitech support forum where the Logitech rep said that the Bluetooth connection is not reliable. He recommended to instead use the dongle provided with the mouse. Okay, first off, a person buys a Bluetooth device to use via Bluetooth. I do not have the patience or the time to babysit a dongle that can be lost easily. I travel too much, and I don't need anything taking up my limited USB connections, and no a hub is not an option. Yet another thing to carry and lose.I use the k811 Bluetooth keyboard. It's brilliant, and I had it for six years with no issues. Why can't Logitech create a Bluetooth mouse that is as reliable like the K811? It just seems a simple thing to do.If you are already a Logitech dongle user, then this mouse will be okay for you, but if you need Bluetooth. Look for another option, because all you will get is disappoint with this mouse. MX Master is more like MX Jack of all connections but master of none.

There is a common problem with this mouse - the mechanism that allows the mouse wheel to either be in "click" mode, or free-wheeling breaks after a while, leaving the wheel in free mode only - you can technically fix the problem by opening the mouse and re-positioning a little rubber ring that's held in place by friction that slides down rendering the mechanism useless. But it requires removing the mouse slider pads and getting into the internals of the mouse.I have had two of those, and both of them have had the same problem after about 12-18 months.The problem with the free-wheeling mode is that the scroll wheel tends to drift as you move the mouse (it's so sensitive).All in all, I like the size and feel of the mouse, but it basically lasts me one year.Logitech build quality has definitely gone down in recent years (see my review on the their Solar keyboard - flimsy plastic legs keep breaking).

This mouse does seem to live up to most of what people are saying—though it seems this is one of those products people get hyped about and write a review for after 5 seconds of use, so I wanted to contribute something I DIDNT get to read when i was researching the mouse.First of all, its bulky and pretty much forces you to cup it with you entire hand. I'm 5'11 and my hands aren't small... I've used a Razor Deathadder for years and love everything about that mouse, except the crappy construction that almost guarantees it will be double clicking within a year.The size/ergonomics is definitely a subjective complaint, but people seemed to rave about them even in comparison to other slim mice, which is confusing to me after having used it. If you're used to a fingertip grip, high DPI with minimal wrist movement... you'll hate this. The feel of the mouse moving on the screen feels "rubbery". Not sure how else to describe it. Just less accurate and quick than the death adder. I think you're paying a premium for their branding and that crazy promo they made about this mouse.I noticed when i barely tapped the side scroll wheel, the primary scroll wheel stops responding (for a while). This seemed to happen more and more often as I used it. I researched it and apparently its a problem with like .... a LOT of people, and its still unresolved. Based on the forum post I read, which was 9 pages long and multiple years worth of posts, it seems like it may be more than just a driver update. I returned the one i ordered and bought something else.

The mouse works great, but Logitech's lousy customer service sours the product. Best to look at companies who actually stand by their products, instead of sending you into a black hole. There are only two possibilities with their lack of customer service. 1. They don't care. 2. they have so many complains in queue that they can't work trough the mountains of repair requests. My recommendation is to choose wisely and look at something different. Unless of course you live for the moments where you get to submit a warranty request, just to see how many months or years it takes to get an answer. If you buy this mouse, it may be wise to submit a warranty request the day you get it. By the time Logitech gets back with you it'll be about when the mouse breaks a few months from now.

NO GOOD for 2017 iMac 27"No good for 2017 iMac 27"!!!! Not only does this mouse skip and randomly jump all over the place, it also gets stuck on right mouse button regularly? That means when your clicking the left button, it thinks your clicking the right!. Check the forums on this and it will verify what I'm saying. Even Logitech admits there's an issue using this with a Mac. I even disabled the bluetooth and used Logitech's USB Unifying Receiver. It did not help.Here's the response directly from Logitech:"Dear Users,We are aware that some people are experiencing issues when connecting their peripherals to a Mac using Bluetooth Smart technology. These issues are related to the way the Mac OS interacts with Bluetooth Smart, a technology that is included in a wide range of products. We are working directly with all parties involved with the issue -- Apple, chip manufacturers, and the BTLE industry board -- to help find a resolution.If you use a Mac and are experiencing these issues, we suggest using the Unifying Receiver included with your MX Master to ensure stable connectivity.We will continue working with all parties to ensure full resolution of connectivity issues.and will share updates on solutions for this issue as soon as we have them. In the meantime, thanks for your patience as we work to solve this problem."SO BASICALLY THIS MOUSE IS NOT COMPATIBLE WITH A MAC!!!!!

This mouse is a "full-size" mouse. I guess the original mice made by Xerox, Apple, & Microsoft were, well, micro. At least according to Logitech they are. What Logitech means by "full-size" is BIG. They're using the term euphemistically. Kinda like a "cozy" house meaning "small," and a "plus-size" model being, well, big. It is so big my keyboard & mouse sliding tray wouldn't close with the mouse on the pad.That thumb-rest to the left is just plain stupid. It always gets in the way, cutting down on your mouse-pad real-estate by 25%. Buy a regular sized mouse, cut 2-inches off the top & left of your mouse-pad, and you'll get the same effect. I don't know who's dragging their thumb-knuckle like a Neanderthal that requires this bulky profusion, but whomever, it's just a stupid idea put into product engineering. I have two Logitech mice with this thumb-rest, and many Logitech mice that don't have it. Trust me, it just gets in the way.Logitech brags about how they sanded down a block of wood to get *just* the right size and layout for the mouse. If this is the best they can do with carving wood, color me unimpressed. A 7th-grader could crank out a design like this in an hour if he knows where the sanding block, sandpaper, & saw are.. The button layout is nothing special. No ergonomic miracle here. While not terrible, they aren't special or noteworthy either. $100 retail for bad-engineering & $3 worth of parts, shipping, & warehousing. I think this mouse made me fall in love with my M705 all over again.Lastly, it's just plain ugly. It is SO 1990's. The colors are weird, the embossed diamond-pattern is as anachronistic as it is pointless.

Cons (very, very many):1) It's too high - just an unnatural hand position that makes the hand tired.2) The weight is shifted too far to the front, meaning that you need to use more of your fingers to move the mouse rather than using more of your arm.3) Way too much friction on the bottom side of the mouse, although this is easily solved by replacing the pads underneath with Hyperglide Mouse Skates.4) The mousewheel wiggles around, such that when you start moving the mouse in a new direction, you feel a jerk inside. Not very smooth.5) Experienced lots of lags/jitteriness due to the Bluetooth connection, even though I used the included Logitech dongle.Pros:1) The horizontal scroll (the second scrollwheel, by the thumb) is a "nice to have", although doesn't add a whole lot of value since you can usually scroll horizontally by pressing shift or ctrl on the keyboard - which is usually easier anyway.2) The laser works on glass, which is probably a "nice to have" for 1% of the population.I tried about 6 different mice after very detailed research and ended up sticking with the M500 wired mouse ($25), with Hyperglide Mouse Skates (to fix the friction problem that apparently exists on all Logitech mice). M500 feels way better.

Update: A few hours after un-pairing/re-pairing to get the cursor moving again, it stopped working yet again. Now, no amount of un-pairing/re-pairing will get it to move. This mouse is a dud.Update: After exactly a month, the cursor stopped moving occasionally but the buttons still worked. If I fiddled with it, turning it off and on, switching the connection, it would come back, but now it has stopped completely. Doing a quick search, it seems that this issue comes up quite often with Logitech mice. By unpairing the device and repairing through the Unify software, the cursor started moving again, but this shouldn't have to be the case. I haven't had an issue like this before with other mice so YMMV.Great mouse, loves that it has both BT and wireless transmitter with three pairs for multiple computer use. The only part I do not like is the auto-infinity scrolling. It's too easy to accidentally trigger the infinity-scroll when all you intended was a bigger than normal racheted scroll. While Ctrl-Tabbing through Chrome tabs, I accidentally held the Ctrl button to long while scrolling and it zoomed to 500%. It has a button for switching between infinity scroll and racheting scroll. I wish it would honor what I set it too.

I bought the MX Master because I have had two MX Performance mice that I love. They are comfortable and the battery lasts for a couple of weeks. The MX Master is supposedly an upgrade from the MX Performance, and I was pretty pleased with it yesterday when I took it out of the box and started working with it. One neat feature is the scroll wheel that automatically changes from "ratchet" to free spin...until it doesn't. As of this morning the ratchet mode no longer works, and the Logitech forums were full of reports of the same issue. I verified all the settings, turned the mouse off and on, tried it on another computer...all to no avail. The scroll wheel appears to be broken. I have returned the mouse and am looking for a replacement.