So I can not understand some people who have reviewed here, this mouse with 2 or less stars .. so I use this mouse for almost 2 years .. and am actually very happy with it I use it as a gaming mouse for CSS and other Ego Shooter and also because I have had no problems with it, however, 800dpi runs with very high precision .. even without the included drivers .. you can not without the driver as a navigation scroll wheel left right use but that you need indeed almost never .. the resistance of the keys is just right not too hard not too soft, and it is very comfortable to hold. Why only 4 points? yes the wheel is not necessarily the best, which is a bit spongy wheel click. but otherwise strong buy recommendation