KensingtonTB450 Wireless Trackball Mouse, Bluetooth LE & 2.4GHz Connection, 4 DPI Options, Connect up to 3 Devices (K72194WW), Black-Blue

I frequently work in an environment without alot of good flat places to operate a mouse. Have to wear gloves so my TouchPad gets wonky. This trackball is a nice alternative to get things done quickly. BT connects well, runs nice and smooth. This is my go to when I can't use a mouse.

I've had a lot of trouble with devices barely being able to communicate with their receivers, but this device works really well, and was incredibly painless to set up. I'm not sure I like the button on the top of the device that switches the connection mode (do a lot of people really need to rapidly change how the thing is connected?), but the button is somewhat out of the way.Extra points for coming in all-paper packaging.

Very smooth tracking, and there were no issues connecting the mouse. Very comfortable fit for the hand and, of course, it works well in a limited space.For some reason I had assumed it's rechargeable (my fault for not reading the description more carefully) so I was disappointed in that, but the responsiveness makes up for it.

I had it over a year now no problems with it. Easy to connect wireless with the MacBook Pro.

It is very comfortable to use. The ball is bit touchy at first but easy to get used to. A little awkward to turn over to get at the power switch but you will get used to that too. I am thinking of getting another to replace the very old corded one I am using for me desktop.

I've been using the Logitech wireless trackball mouse for several years now. I still very much like them, but I wanted a trackball that has a few more features: 1) sideways tracking 2) USB-C recharging and a 3) slightly larger footprint. This one was supposed fit that bill, and for about 3 days, it did. And then.....-The cursor started getting very "jittery" after about an hour of use. I thought my OS was acting up. Turns out, the built in battery was almost fully discharged. Hmmm. No bueno. I plug in the charging cable, and voila, works like a charm. So, it's now been a wired mouse.-The trackball initially was silky smooth in its rolling performance... well, that lasted about 3 days. It has slowly getting more and more difficult to roll. I've cleaned the bearings several times. I've tried the dry silicone suited for plastic electronics, and while it helped initially (a little), it's now as bad as ever. To the point I've simply gone back to my 4 year old logictech mouse. This isn't the first kensington office product I've used, but it certainly is the worst.(I would have returned it within the 30 day window, but alas, extended work trips are a thing.) I am reaching out directly to kensington to see what they say. I'll follow up on this review once finality is reached.

I have over the years used several brands and several designs of track ball mice.I believe Kingston makes some of the best and affordable track ball mice on the market. This one is a bit more square than some of their models and the ball is a bit smaller too. However it functions nicely and at an amazing price for a Kingston.

I travel a lot and I bring my MacBook Air with me on these trips. I use GoogleMap a lot and Apple's touchpad makes it impossible to drag, drop, and click. As a result I use an external mouse. I bought this trackball mouse to try out on my recent trip to Taiwan. This mouse is functional in a positive way. The feel or tactile response for the scroll wheel and 2 primary buttons are excellent. The ball has the right amount of resistance and roll making pointing efficient. The only noticeable problem is the scroll wheel click. It is too sensitive and I end up clicking or opening an icon I did not mean to open. This trackball mouse like all trackball is a little too big for travel. There is little space on an airplane or hotel room for such a device. With that said the trackball set up allows cursor movement in a tight space.