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Kensington Expert Trackball Mouse - Kensington
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Kensington Expert Trackball Mouse - Kensington
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3Dconnexion 3DX-700028 SpaceNavigator 3D Mouse - 3Dconnexion
Rating info
eComparisons Score
eComparisons ScoreThe "Comparison Score" Is calculated based on the average number of times this item was compared with other items in this category by our users
8
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User Rating (Amazon)
User Rating (Amazon)

Five Star Reviews:

57%
Well designed, highly programmable - it will spoil you against any other trackball. Prepare to get one for each computer. . .
September 18, 2017
I never really realized how much I needed this trackball! I've always preferred trackballs to mice, for the simple reason that I hate having to reposition the mouse every few minutes to recenter the pointer. This is an excellent trackball. The ball is a wee bit stiff out of the box, but quickly becomes smooth and glide-ey. One of the greatest things about this unit is the programmability of the buttons not only can you assign global functions for ALL apps, but you can also assign specific functions within specific apps. I've also fallen in love with the ring scroll. My only suggestion would be to make smooth scrolling a function. If there were some way to build in a click function into the scroll ring, that would be super cool too. As is, it has 4 main buttons, three of which are programmable, AND you can assign a function to clicking both buttons, for a total of 5 functions. (The left click button is preprogrammed and not changeable.) The included wrist rest is also a nice addition. One thing I have found is once I got used to this trackball, any other trackball becomes inferior, so I had to get one for both work and home (see how they get ya?) Another nice thing is that this trackball is symmetrical, so those who use a trackball with their left hand (I'm a lefty, but have learned to use the mouse with my right) will find it just as easy to use. There's also a wireless option for the same price. Win win!
Excellent wireless trackball.
April 15, 2017
Love this mouse. I have been searching for an ambidextrous wireless trackball for a while and was hesitant to spend the money on the Kensington Expert Wireless trackball. There should have never been any fear. The button placement is perfect and the trackball glides effortlessly. I love the scroll wheel more than I thought I would having never used them on traditional mice that I've owned.

I've used wired ambidextrous trackball for a few years and just wanted to clean up my desk and at the same time add some functionality. Moving from two buttons to four was very welcome. On top of that, you can simultaneously press the top two and bottom two buttons for six programmable button clicks.

I loved it so much, that I bought a second for the home office. The trackball is stiff for the first 10 minutes or so, but loosens up quickly. The trackball will fall out easily, but if you need to travel with the product, there are very good, inexpensive cases for it.

With my PC, I found that the dongle worked more consistently than bluetooth connectivity, but your results may be different. If you prefer trackballs over mice, you'll love this product.
Great for Video Editing, great to stop RSI
November 8, 2016
I am a film and video editor with more than 25 years of experience. I only write reviews when I think i can really help other people by sharing information.

I film a lot but when editing comes, I can spend 9 hours editing per day. Weeks ago I started feeling some pain in my shoulder, after doing some research I realized it was a mild case of RSI.

Surely, I realized that to stop RSI you need to tackle chair, posture, desk, keyboard, etc. So, keep that in mind when reading my review.

So, lets talk about the mouse. I tried several vertical mouses, I tried ergonomic mouses and even some gaming mouses, the pain was the same and with some of them even worst.

I tried the logitech m570 trackball and found that the way its built you need to use your thumb to handle the trackball. Also, really precise movements as the ones needed in graphic design or video editing are hard to perform with the m570, even more if you are a fast editor, or an editor who thinks fast and wants to keep what your hands do up with what your mind solves.

I tried the Kensington Expert Trackball (wired version) and, at the beginning, I liked the big trackball but did not find much difference. Still, precise movements were not easy.

But then I read some useful reviews and found the solution, and now I love this trackball. I can edit for hours without arm fatigue and, best of all, I do not feel my arm while editing!!!

Without any doubt, this trackball is the best mouse replacement device ever. My next step will be to try a Wacom Tablet, but for now I am in a honeymoon with my Trackball!!!

So, the keys to effectively use this trackball for video editing or other activity that requires extremely precise movements is:

1.Move the trackball with your index finger with occasional help from middle finger. DO NOT use your thumb to move the trackball because that will put you in more pain if you have RSI or will develop other problems if you are OK.

2. I use a MAC, but I assume you can do the same in PC. In Mac, go to Control Panel, Mouse speed control (not the specific speed of trackball but the general mouse speed) and put it right at center or one line before (slower) than center.

3. I use a MAC, but I assume you can do the same in PC. In Mac, go to Control Panel and in the panel of the Trackball, check for the tab that controls speed, set the speed between 20 - 40% (the exact number will depend on your style of editing, fast or slow movements). This will help you to do precise movements without problem, but will reduce the speed of the pointer to traverse big distances fast. So, to help with that, in the same tab, set up the acceleration of trackball around 40-70%. This will help the trackball to catch some speed when you spin it to move the pointer from a one point to another in the other side of the screen or in a second screen.

4. The trackball has 4 buttons that you can customize in the same tab mentioned before. As default, the lower buttons are set to right and left click. I suggest you to set up the upper left button or the upper right button to drag lock, that way you will stop one of the worst activities for RSI, the dragging. With drag lock, you click on item with the drag lock button, you move it and then you drop it with another click of same button.

I hope this review can help other video editors, or graphic designers, or sound mixers, looking to protect their hand/arms, or trying to stop RSI or even carpal tunnel.
Used for High-Demand WORK, 100% Accuracy
October 4, 2016
My wife and I have used the wired Expert Trackball Mouse exclusively for the past ten years, both at work and at home. Following the advice of an ergonomics specialist, we combined this trackball with regular (substantial) exercise and have succeeded in keeping carpal tunnel syndrome at bay. This is a result of reduced hand movement, combined with a shorter distance between keyboard to mouse, which results in less shoulder movement. Some of my co-workers of varying ages have made the switch, as well, and have reported significantly reduced or eliminated wrist, shoulder, and hand pain.

Recently, my wife spilled a large glass of water on her trackball, and it stopped working. We decided to try this wireless version, and it has performed perfectly. We both perform computer-oriented jobs (data analysis, programming), so accuracy is vital, and this trackball has kept up. When my wired versions one day stop working, I'll switch to wireless as well.

As an aside, the wired trackball started working again, after drying for a few days.
Works great for me!
October 1, 2016
I've been using trackballs ever since I got my first Mac Performa in 1995. It's a personal choice thing, but after all these many years I have no carpal tunnel and I don't have to have the extra mousing space on my keyboard tray. I type reports for a living, so I spend at least 8 hours every day at my computer.

For the past 13-15 years I have been using a PCAlly Glitterball trackball, which has functioned remarkably well (probably because the ball is heavy for it's size and is on steel rollers), but lately the old Glitterball's right mouse button has become somewhat sporadic in response, so I decided to try something new and see if I could get used to it.

I bought one of the Logitech M570's but alas the ball was not heavy and it seemed somewhat "scratchy" and was hard for me to move it smoothly. Plus, the ball was too small for me— I have large hands, and I'm used to hovering my fingers over the ball and moving it with my hand instead of finger pinching.

So I bought this Kensington Expert Trackball Mouse, and my first impressions are quite good. It took my Mac a few seconds to latch onto it for use, but now it's working just fine right out of the box. I have not installed any software (will look into that to see if it would be useful for me).

The ball is LARGE, very large. And the one I bought moves as smooth as silk right out of the box. Because my keyboard tray is positioned pretty low, I am more comfortable using the wrist rest, it seems. (time will tell). The ball platform and the ball are both heavy and I like it that way, it seems to allow the ball to move more fluidly. The left and right click buttons are just where I need them to be too. I wasn't sure how I would like the scrolling ring, but I think it's going to do OK for me, once I get used to it; it was a little noisy and scratchy feeling right at the onset but has become smoother and quiet over the past few hours of use.

Yes, this was a pretty pricey item, but if it lasts like I hope it will, I'll consider it money well spent.
73%

There are no reviews yet

Four Star Reviews:

16%
Marble mouse user converting to Expert Mouse
July 17, 2017
6' male with slightly above average hand size.

There was without a doubt an adjustment period. And because of pain and cramping in my hand I almost sent it back until I relearned how to rest my hand on the mouse. Once I found the correct hand position for me I purchased an adjustable lapdesk to help facilitate that position (see picture). Now I can use this mouse for 12 hours straight without experiencing any cramping or pain.

I have no affiliation with the lapdesk nor the mouse but in my mind these are a package deal. I would not purchase one without the other. The mouse stand of the lapdesk allows me to pitch the trackball at a negative angle so the the back of my wrist and forearm create a straight line instead of my wrist having to flex back toward my forearm(see picture 2). The expert mouse has rubber pads on the bottom so even though the stand is at a 10 degree angle the Mouse does not slide at all. (I do own the pad that Kensington sells for this mouse but I don't use it because the tilted mouse stand is a far better solution)

I had been using the Logitech Trackman Marble mouse for the better part of a decade and loved it. Ultimately I decided to give this a try because I needed a mouse with a scroll wheel. When paired with the tilted mouse stand the Expert Trackball mouse is both more comfortable and functionally superior to the Marble mouse. Take away the downward pitch of the mouse stand and the functional superiority of the Expert mouse would not matter as it causes too much cramping for longterm use.

I am a Mac user and the software and mouse have worked seamlessly.
I'm on my fourth one and would get another one if one quit.
March 14, 2017
I've got two now, one wireless, at work; one wired, at home. They operate the same, smoothly and effectively. I like the ability to set my buttons up any way I want them. I like the 'wrist rest extension' that comes with it. I like the scroll ring. Did I mention I've got two of them? I'd get another if one of these quit working. Over the past fifteen or so years, I've had four of them.
Great Trackball. Wrist rest could stand some improvement...
January 27, 2017
The plastic rectangular connector that connects the wrist rest to the trackball is glued or otherwise attached to the wrist rest pad and there are two plastic pins on the connector that insert into the underside of the trackball. When I first saw this construction, I began searching, Amazon first, and then the web for replacement wrist rests because this construction didn't look like it would last but so long the way that I rest my trackballs on my thigh while surfing the internet.

They were nowhere to be found. Kensington claimed that they didn't make them but to contact them if I had any problems.

four months later, there are two cracks on one side of both pins and I've contacted them but, judging from the tone of the previous replies to the initial inquiry, I'm not sure what to expect...
Expert Trackball compared to Slimblade
November 21, 2016
After about 7 years the right click button on my Slimblade trackball stopped functioning. I configured the upper right button to work as a left click until I got my new Expert Trackball. First of all, the Expert is not as big as the dimensions given in the description here and some other venders. The actual width is about 5 inches and the Length is 6, not including the wrist rest which adds makes it about 9 inches long (which, I was thankful for, because I don't have a lot of room on my desk). Nice solid feel overall, ball rotates smoothly with a little drag; but, I took the old ball out of my Slimblade and I actually prefer the feel of that one, it has less drag for some reason. The buttons have a more solid feel to them when "clicking", an improvement over the Slimblade. The scroll ring is a little bit of a disappointment (that's why I only give it 4 stars); it has an uneven feel and a dragging sound but otherwise works well. The slimblade scroll works by rotating the ball, and though it had a tendency to move the cursor at times, I prefer the feel of the rotating ball over the ring. If I was buying one of these for the first time I think I'd lean towards the Slimblade. But since I can use the ball from the Slimblade in the Expert I actually prefer the Expert slightly with its more positive feel to the buttons and the wrist wrest
Nice upgrade from an original expert mouse trackball
November 27, 2015
Been using a Kensington Expert mouse for MANY years - love it for editing as well as general computing. But my antique Expert Mouse, although perfectly functional, just didn't play nice with newer OS's - anything newer than XP and there was little support for it - pointer speed was slow, with no possibility of inertia or more than basic scrolling. I have been hesitant to spring for a new one since the old one functions so well, but I hated the lack of modern "amenities". Finally saw this one as a warehouse deal.
It arrived quickly, and other than a damaged box (reason for it being a warehouse deal) it was as new. Even without their Trackballworks program it was a major improvement over the old version - windows 7 identified it immediately and gave me proper scrolling control. Trackballworks gave a few additional controls and the ability to customize buttons, but haven't set anything up yet. I love it.
So why only 4 starts? As others have said, the scroll ring doesn't operate as smoothly as the remainder of the trackball. It's ok, but doesn't have the "well-oiled" feel that the trackball itself exhibits. But all-in-all a major upgrade, and highly recommended. Especially if one comes up on the warehouse deal at a good price.
15%

There are no reviews yet

Three Star Reviews:

10%
I had hoped for more after decades of using the wired variant but am seriously disappointed in this wireless unit.
August 21, 2017
I had hoped for more from Kensington on this unit. I've been an Expert Mouse wired trackball user for probably going on 20 years now - however long that thing's been out. To give you an idea - my old unit has an RS-232 serial connector on it with a conversion cable to plug it into a PS/2 old style mouse port. USB literally did not exist when I got these... I always loved my old units (have had several.) When I found that there was a wireless unit available, I was happy - especially since it included both Bluetooth AND USB dongle connectivity. I only have 2 USB 2.0 ports on the front of my workstation and those are taken, and I didn't want to burn any of the USB 3.0 ports for the trackball, especially as my motherboard has built-in Bluetooth.

The love affair was short lived... Especially at this price!!
* First off, the scroll ring (new to me as the older wired units I have were missing this feature) is gritty, inconsistent, and not very smooth to operate, making it inaccurate, cheap feeling, and only good for high-level low-accuracy scrolling.
* The buttons don't have enough friction holding them in place, so while they click just fine, typing on a keyboard placed next to the trackball results in the buttons vibrating and 'buzzing' with each keystroke. You also get the same noise if you click and lift your finger/thumb off the button at the end of the click stroke. To be fair, all Expert Mouse units have done the latter and I'm used to that but now... Think of it like a rattle in your car that is new, loud, and unending - kind of like drilling teeth it's so annoying.
* Lastly and worstly, the Bluetooth connection disconnects arbitrarily and frequently. It always seems to come back but when is also unpredictable. Sometimes it's a second or two on its own, sometimes the trackball or scroll ring has to be activated for several seconds or longer. I originally thought this was some sort of inactivity time-out issue but it will/has lost connection WHILE IN USE(!). Not good...

So, in summary, Kensington has had a great idea for a very long time in this form factor of a trackball solution. The problem is, it's only a great idea in theory when it comes to the Wireless Trackball variant. In practice/execution, it's not so great and far too expensive to suffer these issues. Kensington should be ashamed that they've let what once was an industry leading pointer solution fall so far off in quality and execution. I cannot recommend the Wireless Expert Mouse in its current state and am seriously considering returning it.

I have to say also that I am very disappointed that there are so many other reviews here on Amazon that have similar complaints and not one of them has been addressed by Kensington. I'm left feeling like they don't really care about their customers' experience anymore. That not only makes me sad but also will steer me away from all Kensington products from now on.

Unfortunately, my old trusty wired Expert Mouse trackball has that old-school PS/2 mouse connector and that's just a port that is rarely available on newer systems anymore. Plus I wore one of the buttons out on that unit over years of use. It's sitting next to me right now and I'm hoping it will osmosis some reliability into the new unit. So far, no good.
Decent, but slimblade might be better
May 22, 2017
I have been in quite a bit of dilemma in choosing between this mouse or the newer Kensington Slimblade. What finally won me over was the wireless capability of this one as well as the physical scroll ring (it's nice to have some physical touch rather than just twisting the ball). Here's what I found:

Pros:
1. The big trackball is really huge, which makes it really easy to move the cursor around with different fingers, using different muscle group.
2. The TrackWorks software is not bad, offering a lot of options, but for ultimate customization, pair it with Auto Hot Key.

Cons:
1. The buttons are not really what I would describe as ergonomic, they are a bit hard to press, requiring quite a lot of force to register a click. The clicks are also not as satisfying as a normal mouse. (Really, for the price you are paying, expecting a decent, easy click is not something hard to ask for).
2. If you are using window 7 x 64 bits, the trackwork software will not work without some modification. The problem is because the kensington driver is not digitally signed. There are ways to get around it but it involve user playing around with their computer's setting to get it working. It is definitely not just plug and play as what Kensington promised...
Inconsistent scroll wheel across units, USB Rx flaky device recognition
April 14, 2017
I bought two of these, one for home and one for work. One works well and is what I hoped for. The scroll wheel is easy to spin and ergonomically fits pretty well. The other one I received has a scroll wheel that has much more resistance to spinning, making it hard to use. Seems like a quality control issue that could easily be identified before shipping. I'm going to have to exchange it.

[Update after 2 months use]
I like this mouse. Now that I've gotten used to it I find it helps me be quicker navigating and scrolling. The only recurring problem I have with both mice is the wireless USB receiver. Several times a week I experience Windows complaining that "An unrecognized USB device has been connected...", forcing me to remove and re-insert the device. One one of the setups I have the USB mouse connected via a USB console switcher and the problem happens the most there. However, the other setup has it connected without this and I have still seen the problem occur there on a normal boot of Windows (from a shutdown state, not sleep). Remove and insert corrects the issue, but it's an annoyance that should be fixed. I also have a wireless USB keyboard connected to the USB console switcher and I never have a problem with that USB receiver.
A CLASSIC TRACKBALL REVISITED
September 19, 2016
28 years ago I was a fan of the large Kensington Trackball Mouse, I had one that I used until I wore it out, then I bought another and it was not so good, the second one became problematic quite quickly. That caused me to switch brands and not look back. Recently I needed a new trackball for use in Logic X on my Mac Pro so after doing some research I thought I would give the big Kensington another try.

The packaging is nice, the trackball was easy to unpack and get ready to use, now lets see where are the instructions? There are none except the mention of go to the Kensington website to get the instructions, this immediately cost the product one star, what if I had no internet handy, am I not supposed to use or try the device?

So I went to their website and all I found was the "Quick Start" which does not explain anything about using the software for the trackball or anything about customizing the trackball for various apps. The only way I found out how to use these software driven features was trial and error a sometimes tedious and time wasting endeavor which cost the unit another star in my review.

Overall I like the way the ball feels, it is starting to loosen up and spin freely, it will be interesting to see if it continues to feel good or will it get dirty and become problematic, only time will tell. The buttons have a good solid click. The scroll wheel is so near the ball that it is easy to bump the ball and cause scrolling to stop until you move the cursor back over the elevator you're trying to scroll. This limits the function of the scroll to me.

One customizing feature I like is the ability to cause one of the buttons to be a "Drag" button. This is the equivalent of putting your cursor over something, pressing the mouse button and holding it to drag an item around. This is going to be handy in navigating around in Logic. It would be nice if the trackball housing was a little heavier or at least had a more weighted base so it would stay situated on the desk without moving around so easily. This is not a gadget you're likely to travel with so a little extra weight for stability would be welcome.

Time will tell if this is a reliable device, in my studio it will get a good daily workout.

Good music and happy computing to all.
Nice Trackball Despite Quirks
September 10, 2016
I purchased the Kensington Expert Wireless Trackball Mouse to replace a Logitech wireless trackball which developed the notorious Logitech double-click problem (one left click produces a double-click, a hardware failure common to their trackball product). I have always been a fan of Kensington trackballs and was very excited to finally see a wireless expert-sized version on the market. This one does its job but set-up was tricky, the BT connection is glitchy, and there are a few of what I consider 'design flaws':

PROS:
1) Wireless ability makes this a great pointing device for a living room HTPC type setup where there is no desk for a traditional mouse.
2) Advanced customization features, such as slow, and linear options (press and hold a key while scrolling) facilitate precision movement. The extra buttons can be programmed with custom functions in the device configuration software.
3) Smooth roller (after device is broken-in) movement
4) Ability to use the same pointing device with two computers: pair one via Bluetooth and use the USB dongle on the other. The BT on/off switch underneath the device allows you to switch between computers ("BT-on" uses only the BT connected device, "BT-off" uses the USB dongle).
5) Battery life is excellent. I'm still on my first battery after using it on a daily basis for several weeks.

CONS:
1) USB dongle (storage location is inside the battery compartment) was not recognized upon plug-in. Product did not arrive with a CD. I went to the Kensington website and found the product support page to download the drivers and software. After downloading and running the installer the USB dongle has been working fine. Also the dongle has no distinctive markings, so if you use more than one small USB plug-in, you need to remember that the plain blank one is the Kensington dongle.
2) BT pairing is easy but maintaining the connection is intermittent. Every ~10-30 minutes the bluetooth connection resets, which is an annoying first world problem. It disconnects, causing the trackball to stop working, and then within 5 seconds re-connects and works fine again, like a hiccup. Other reviewers have reported this issue and have not resolved it so I am assuming it is a BT driver issue and hope that an updated driver will fix it in the future if Kensington puts the effort into bug fixing.
3) Scroll ring feel is pretty bad. The scrolling ring is notchy and feels very cheaply made for an expensive trackball. The scrolling action is jumpy no matter how you configure it in the settings.
4) Having the ability to use the same trackball on two computers is nice, but it is awkward to get to the switch. Underneath the device there are two similar looking small switches, one turns the trackball on and off, and the other controls bluetooth on and off. Toggling the bluetooth switch is what makes the trackball switch between the BT connected computer and the USB dongle connected computer. This means picking up the unit and turning it upside down to locate and flip the tiny switch. Clumsy people (like me) may also find that the ball will fall out if it is not held the right way while doing this.

Suggested Improvements for Kensington ("Dear Kensington,"):
1) Change the scroll-ring design, perhaps keeping the scroll ring as a volume control and adding another thumb-wheel towards the front of the unit (in front of the ball) for scrolling (like where the Logitech wireless trackball puts the scroll wheel).
2) Fix the bluetooth connectivity issue where the device disconnects and reconnects intermittently. It seems that, for whatever reason, the battery-saver activates despite the device being in use while in bluetooth mode. It does not do this cycle while connected via USB dongle.
3) Stop driving your customers crazy with off-shore scripted tech support agents who ultimately cannot fix the error described above (#2). They will waste time while messing up a lot of settings in their futile effort to help. Just declare it a known issue and then fix it. Please.
4) Move the BT on/off switch to a side, front or back of the unit so the user doesn't need to turn it upside-down to find the switch, risking a drop of the track-ball from its cradle. Extra functionality suggestion: allow more than one BT connection to be stored for pairing with 2+ computers. Slider switch for USB-BT1-BT2-BT3, etc.
5) Allow the front-to-back angle (rake) of the device to be adjustable. Adding a "kickstand" or snap-on wedge to the bottom rear of the trackball would allow for more ergonomic variability of the tilt, which affects wrist extension.
6) Packaging & Instructions: "out of the box" frustration for customers can be reduced by: providing instructions on how to locate and download updated drivers, revealing the secret location of the USB dongle (hidden inside the battery compartment), and notification that it is normal for trackball motion to be coarse for the first few hours of use during the break-in period.

Overall it is a nice trackball even though it feels like a 1.0 design. I am looking forward to Kensington's next iteration of the wireless expert trackball.
4%

There are no reviews yet

Two Star Reviews:

8%
Totally unnatural wrist position with or without the included rest
May 27, 2017
Wrist rest or not, for the life of me I can't figure out why they'd design a trackball that forces your wrist to bend UP un-naturally. I like trackballs over mouses, but I sure don't like this one. To get my hand and arm into any kind of comfortable ergonomic position, I'd have to build an abnormally LOW desk top or trackball stand, then insert some kind of wedge UNDER the Kensington to tip it forward, and put something large like rolled up towels around the wrist and forearm area for the hand that uses the trackball. Really? Some engineer really thought this shape and style was something other than a horrible idea?
wireless is unreliable
March 29, 2017
unreliable wireless. I replaced a wired expert mouse that died after many years with this wireless version. When it works, it is fine. It looks better than the wired version also (especially if you have a black ball from the wired version to use with it). However, the connection is not reliable with the included transceiver, and with bluetooth it is worse. I would recommend the wired version, but not this.
A Decent Trackball with Horrible Software Support
July 17, 2016
I have been a user of Kensington trackballs since the early 90s (TurboMouse ADB days!). In those days the driver software did so very much more, like being able to customize each button on a four button trackball to do multiple “click” types while holding a modifier key, so holding control and clicking was different than just clicking the same button. You could combine modifiers to make lots and lots of click types, so shift-control-click did something different still! It was wonderful in those heady 68k and PowerPC Mac days before the launch of OS X. After OS X, the software lost these extra abilities. In the years since, Kensington has released few Trackball updates, but I usually buy each one, with the exception of the SlimBlade and the Orbit wired version (I have the wireless Orbit).

I wanted to get this one due to Bluetooth LE support, which is a must for the device to work properly. My Mac supports BT LE and so I was surprised when the documentation stated that a Mac user needs to use the Mouse system pref panel to configure the Trackball. There are two very large issues with this setup the way that Kensington has done it. There is no way to customize the four buttons on the Trackball. There is a choice for which is the primary mouse button (left or right, which seems to be bottom left or right), scroll direction, scroll speed, tracking speed and double click speed. So now my “Trackball that professionals use” with four buttons has one;y 2 that are usable. The other big issue I see so far is there is no way to check the battery level in the system. Other BT devices can show battery level either through the BT menu extra or in the mouse panel itself, but this Trackball shows it nowhere that I can find.

I still love the device itself as far as input goes, but the lack of customization on a $100 input device is unforgivable. I would not have bought a Bluetooth device if I wanted to use a USB port on my MacBook Pro. The whole point of a BT device is to free up the port, not use it because the coders at Kensington cannot figure a way to make BT LE do their bidding. Kensington, please re-examine your treatment of Mac users! We are professionals, and we do like to tweak and tinker. Step up and show us you still care!
Radio range is very limited & Bluetooth function does NOT work w/ Win 7
April 8, 2016
I use Kensignton trackballs whenever possible (we probably have 5 between home & office), so I was looking forward to the wireless possibility of this style. While this has options for both radio (2.4ghz) or bluetooth, there are issues with both options. The radio signal only works if you're within about 3' of the receiver (receiver is included with the trackball), and then it drops off completely. The bluetooth option will only work with Windows 8 or higher, but I have opted to stick with Windows 7, so there's nothing I can do about it. I tried several bluetooth adapters & finally confirmed it somewhere (that wasn't obvious- it should have been stated in the ad) in the manual.

Btw, the first trackball worked for 1 day, then just quit for some reason, so this review is based on the 2nd one & it seems to be working fine (not any better than the first, but longer:-). Bottom line, not enough range w/ radio option, and not designing it to work w/ Win 7 is disappointing & kind of surprising.
Crappy scroll function/design on an otherwise gorgeous mouse.
July 23, 2015
First of all I want to say what a beautiful mouse this is. I adored the ball, it's size,placement,feel. I love the placements of the buttons, the feel of them when clicked and the fact they were so easily programmed. Now to the part I hated and the reason I returned this mouse. The scroll wheel is the worst thing I have ever used in my life. I am hoping this is not some across the board design flaw because I ordered another mouse that is coming tomorrow. If it is just as defective, I will add to this post one way or the other.
I had read this mentioned in one other review so I was not surprised but I was surprised at just how awful the scroll is. The cheaper version of this mouse has a beautiful scroll wheel with a high collar with deep ribs and an ultra smooth scroll action. This mouse is the complete opposite. The scroll is set so low you can't help but click buttons using it. The buttons end right at the wheel so I have to guess that whatever is sticking has something to do with the placement of the buttons. I could actually hear the ting of metal catching at its worst sticking points. The other hugely annoying part about the scroll is the shallow ribs and almost no height to the ring. I have very small fingers and still managed to click the buttons using it. Lastly, the noise of the scroll is hideous. There is a sandy plastic grinding sound when the wheel goes around along with the gritty lag to the scroll wheel and this is when it isn't catching and stopping on something inside the mouse body.
I am very sad about this design flaw because the rest of the mouse is so perfect.
UPDATE on 7/24/15:
I did get the second mouse in. It is marginally better than the first one. I upped my rating to 2 stars. If you are buying this to enhance your scrolling experience I would have to recommend the cheaper version of this mouse for the above mentioned reasons. The second mouse still has catches I can feel so the scroll is no where as easy and smooth as the cheaper version. Looking for differences between the 2 pro mice, I do think the buttons on the second mouse are centered better so perhaps that has something to do with it. All I can say is try this mouse if you want but try it right when you get it and send it back if it is as horrible as it was for me.
3%

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One Star Reviews:

9%
Great if you like grinding metal
January 24, 2017
The scroll wheel grinds metal on metal, resulting in poor function. The track ball is also not smooth. For almost $100 I'd expect better quality, this feels like a $20 product, and that's giving it undue credit.
Amazing. I was so hyped when I first got ...
December 26, 2016
2017.1.8:
Update: Unfortunately, I have to give it only one star now, and I wouldn't recommend it anymore - the Bluetooth connection stopped working. It's been sitting on my desk this entire time, so there has been no external impact / damage at all (it never even fell off the table). I've tried replacing the batteries, restarting my laptop, tweaking the software, and reinstalling drivers - all to no avail. Now it won't pair with my laptop or other laptops anymore, even though the Bluetooth "connecting" light on the mouse still turns on when you hold all 4 buttons down. It still works when I have a USB dongle connected, but I got this precisely because it wouldn't use up one of my only two USB ports. A $99 mouse shouldn't stop working in less than a year. It was a delight when it worked, but then again, I doubt anyone would spend money on an iPhone that could only connect to the internet for 8 months.

2016.12.25:
Amazing. I was so hyped when I first got mine, and after using it for almost a year, I feel like everybody should try using a trackball mouse for at least a week to a month. One of my professors from college had one, and it looked really cool and futuristic, so I decided to give it a try when I stumbled across it on Amazon. The driver is very easy to install, and you can customize the four buttons, the scross wheel, and cursor sensitivity/speed however you like. The ball itself spins and glides very smoothly - it's easily removable if you ever want to clean it (it doesn't get dirty easily though), or if you feel like playing around with it while reading something, and it's very sturdy - drop it on the floor and it'll bounce slightly with a clunk. It won't shatter, but don't go tossing it around though - think of it like a large golf ball without the dimples. Your hands might feel slightly sore the first few weeks if you use it regularly, since you're using different muscles than what you're used to (especially if you're dual-wielding like me, with a mouse in your right hand and the trackball in your left hand... did I mention it's perfectly symmetrical so it's great for both lefties and righties?), but you'll get used to it by the end of the first month. I've been using mine for a year now and it's been great. Would definitely recommend.
The scroll ring is sticky and hard to rotate
August 25, 2016
I've used this same style mouse with the same model number for nearly 8 years and loved it. Then lightning struck nearby and the mouse was cooked. I ordered that same device, by the same manufacturer, from Amazon last 8/23/16 and it arrived as scheduled from Amazon (Prime) today (8/25/16). I connected it via USB to the computer and the device driver installation screen appeared. The roller worked and the keys, but the scroll ring didn't. At first, rotating the ring did nothing. While searching for Kensington setup, I noticed that the ring had become operational. Howver, rotation was difficult and sticky. It was very hard to turn compared to the old one and it catches in places requiring too much pressure to turn it. The scroll ring is nowhere as smooth as the old one.
Very disappointing, would not recommend
September 14, 2015
Very disappointing. Would not recommend. Clearly a case of 'new & improved' gone wrong.
1) Scroll ring is slow, feels like it's running on rocks - not smooth, gives uneven/unpredictable scroll response.
2) Unit lacks functionality (no quick launch buttons, fewer programmable button combos), speed, and adjustment of older units. (Once removed, you can easily feel how much performance and functionality these things provided.)
3) Wrist rest was poor fit - mount pins did not line up properly and it looks misshapen.

Only good thing is the optical read - smoother than the old rollers, easier to clean. After using Kensington's older Expert Mouse Pro for 10 years, I would NOT recommend the Expert Trackball Mouse. In spite of using rollers (not optical read), the old Mouse Pro model is still a better - far better - desktop companion.
Scroll ring so rough, it's unuseable.
December 7, 2014
Very disappointed in terms of build quality. I've had another of this same model for a couple years now on another PC. I generally like it very much except that the smoothness and usability of the scroll ring is not nearly as close the the smoothness and usability of the ball itself. But it's not so bad as to be distracting, and not having found a better trackball overall, it wasn't a deal-breaker. Then, recently, I needed another for my 2nd PC in my electronics shop, and considered this model Kensington acceptable, especially for the shop. This one has an even smoother ball, and is, of course, perfectly silent. It glides like it's on air; the first unit was never quite this smooth, even when brand new. However, on this one, the scroll ring is just horrible; makes the scroll ring on the first unit seem really smooth and quiet. This one is so rough, it's almost like it has sand in the mechanism, or just rough plastic on rough plastic. The feel gives no indication of having any bearing at all, and the sound is so loud it is literally embarrassing. It is actually sticky and very hard to move, especially compared to the extremely smooth and ergonomic ball. The ball makes the unit seem like a $100 unit; the scroll ring makes it feel and sound like it's maybe a $5 trackball. The complete incongruity of quality between the ball and the scroll ring make it unuseable for me. Am using it without using the scroll ring for now; looking for a better trackball. I will only have one that takes up this much space if all the features are quality features.
5%

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Pricing info
Old Price
Old Price
Price
Price
$75.88updated: Mar 19, 2020
$249.99updated: Mar 20, 2020
Features
Answered Questions
Answered Questions
Article Number
Article Number
0814227012278
0168141473906
Binding
Binding
Personal Computers
Personal Computers
Brand
Brand
Kensington
3Dconnexion
Color
Color
Black
Navy Blue
Currency
Currency
USD
USD
Department
Department
Keyboards/Input Devices
Computers
Format
Format
CD-ROM
-
Formatted Price
Formatted Price
$94.99
$99.99
Hardware Platform
Hardware Platform
Pc
-
Height
Height
383.9 in
78.7 in
Legal Disclaimer
Legal Disclaimer
Warranty does not cover misuse of product.
If returned, refund will not be given until product is verified received back to sender. Private seller, not a sale company.
Length
Length
137.8 in
118.1 in
Manufacturer
Manufacturer
Kensington
3Dconnexion
Model
Model
K64325
3DX-700028
MPN
MPN
K64325
3DX-700028
Name
Name
English
-
Number of Items
Number of Items
1
1
Number of Parts
Number of Parts
K64325
3DX-700028
Number of parts of item
Number of parts of item
64325
-
Operating System
Operating System
Windows
Windows XP
platform
platform
Windows
Linux, Mac, Windows
Product Group
Product Group
CE
CE
Product Type
Product Type
COMPUTER_INPUT_DEVICE
COMPUTER_INPUT_DEVICE
Publisher
Publisher
Kensington
3Dconnexion
Quantity
Quantity
1
1
Reviews
Reviews
Score
Score
8.6
9
Size
Size
5"w x 5 3/4"d x 2 1/2"h
One Size
SKU
SKU
B009323WS8
DBL09398
Studio
Studio
Kensington
3Dconnexion
Type
Type
Original Language
-
Warranty
Warranty
Expert Mouse® is backed by the Kensington 5-Year Warranty and free technical support.
-
Weight
Weight
0.6 oz
3.7 oz
Width
Width
383.9 in
118.1 in
Feature
Feature

Large ball Trackball Mouse with Scroll Ring for comfort and precision

Customizable 4-Button design via TrackballWorks software

Compatible with Windows (including Windows 8) and Mac OS Computers

Advanced 6 degrees-of-freedom optical sensor

Simultaneously pan, zoom and rotate 3D models

2 programmable function keys

SpaceNavigator SE model includes commercial use license and full technical support

Ideal for 3D designers, CAD engineers, architects

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