-As an optical mouse it some times has problems on certain surfaces that Ive not had problems with on other optical mice. -Being wireless it some times takes a while to actually move the pointer on the screen but once moving then there in no problems. -Quite heavy due to to the batteries but y..
I already have one of these on my pc so when i saw this at such a goodprice i had to buy one for my Sons pc. Works fine very responsive ifyou play alot of games on your pc like we both do and battery life isgood aswell. Id reccomend it to anyone playing pc games, i would ofgiven it 5 stars but..
It performs exactly as specified and installation is easy, but there are a couple of things that would make me pick something else if I was choosing again. 1 - The weight of the batteries upsets the balance of the mouse. When you pick it up to reposition it on the mouse mat it tips backwards. I find..
Switched from a Microsoft Trackball which has problems with the metal ball-bearings aquiring gunk very quickly.
The Logitech uses plastic ball-bearings for the ball to glide on. This seems to make the ball more resistant to gunk and generally smoother with no scratching after cleaning...
-As an optical mouse it some times has problems on certain surfaces that Ive not had problems with on other optical mice.
I already have one of these on my pc so when i saw this at such a goodprice i had to buy one for my Sons pc.
It performs exactly as specified and installation is easy, but there are a couple of things that would make me pick something else if I was choosing again. 1 - The weight of the batteries upsets the balance of the mouse. When you pick it up to reposition it on the mouse mat it tips backwards. I find.. 
The mouse is great. A bit smaller than I expected, but great if you always use a laptop... 
Switched from a Microsoft Trackball which has problems with the metal ball-bearings aquiring gunk very quickly.