worked right out of the box. scroll wheel on thumb instead of top like most (that i am used to) buttons are 'huge' as well and take some getting used to. overall i really like the trackball size, very comfortable for my arthitis.
Verified purchase: Yes | Condition: New
First of it is HUGE. I know that there are dimensions, but I didn't expect that it is so big. I can't say that it is disadvantage, but you really need to make attention to the size. Now about disadvantages. I used thumb controlled trackballs previously (M570 and some other similar ones) and decided to give a try to this one. So, I can't normally control it with 1 hand. The buttons are not comfortable when you use it with 1 hand. Especially left-click. Holding it and moving the ball is very uncomfortable. I re-mapped the left-click to fn1 and it got a bit easier to control, but not so handy as with M570. Right-click is in a better place, but once again if you need to hold it and control ball - you are in the troubles. Advantages: The build quality seems to be solid, all the materials look very solid. 10 configurable buttons can make you happy if you use them properly. It is said that there are 8 buttons in the title, but there are 10 of them (you can click wheel in 3 ways, push it down, in the middle and up). Controlling the ball is also nice. You can do that with several fingers at single time. I like it until the moment when you need to click some button. I don't care about DPI, but I believe that it is working fine. Overall: I can surely say that this device is not for me. I'm keyboard person and use mouse/trackball only time to time. If the mouse/trackball is your primary tool then it can work, especially if you are OK to work with it with 2 hands. It might be related to the arm shape/size (mine is medium size). So few words - it is good quality tool that didn't work for me. Will it be good to you - you decide.Read full review
Verified purchase: Yes | Condition: New
It's very large, but after a while it no longer seemed to matter as it is comfortable to use and quite a good lay out. Some of the function buttons seem to me to be a little unnecessary, but again it does not seem to matter much as I just ignore them. My main problem with this track ball is the price, it's expensive, well at least I think so, others may disagree with me. On the whole it is better than others I have used, just a bit large and clunky.
Verified purchase: Yes | Condition: New
Finally, a great replacement for my MS Trackball explorer, works great. Instructions could be printed larger or have the manual installed with the onboard software.
Verified purchase: Yes | Condition: New
I've been looking for a handy trackball for a long time. In my opinion, this is the best thing in the market today. Big ball, a lot of buttons, great sensitivity.
Verified purchase: Yes | Condition: New
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