Bests & Worsts Reviews from Amazon

have had no problems with this. Was worried about it working on a hard desk surface without a mouse pad, but tracks perfectly! very light, but comfortable in the hand. Also, it is almost dead silent with clicking, moving, and rolling of the ball which is good while in a quiet lecture class. I use it with my Surface Pro 3, and it's fantastic. I like how the USB fits right into the mouse itself. At first I thought they messed up and forgot to package the USB connector, but it is right next to where the battery goes! Do feel I should note that the ball scroller is not really a ball. It looks like it should go every-which-way but it does not. It only goes on track forwards and backwards. This is fine, but the look of it makes you think you can scroll in any direction and you cannot.