Good office mouse "normal" size, not a tiny thing like mouse cell. Quite heavy with its 2 batteries (AA, AAA not kind to small remote) that the imbalance slightly for movements, but it also works with a single battery. Installation without problem since there is nothing to install, just plug the mini USB dongle, recognized and used immediately. It slides well and carefree Pointing at a mouse pad but also even my desk that is varnished wood. So the "laser" is good. The wheel can be tilted to the right and left, I thought it could be used for the horizontal scroll which would have been great but that does not matter at all ... maybe he should install a logitech software to configure because it is not "standard". The buttons "Previous / Next" work well, not configurable for other software without function well. There are not ideally placed to my hand, but I guess it depends on the hands ... Big flaw for me: the click wheel which is very hard and makes a loud banging noise, so that it must want to do a middle click. Very disabling for me using that click all the time, especially in firefox. My old wired mouse (Logitech also) was better at this level, and also much lighter (logic). I also noticed a few losses followed by time, the dongle is plugged into the back of my tower that is under my desk.
