Its 4 swtichables resolutions by the central button is top. I play on personal WOT, and level 2 is more than enough, because when you zoom in on the enemy, mouse move 1mm corresponds to 20/30 ° on the screen, it's very powerful. My mouse is set to 1/4 for sets Acceleration / speed and 1000HZ. No problems with the management software on my Win 7 Ultimate 64bit SP1 The time of adaptation is fast, easy handling, and comfort after long hours is present. It is not noisy to click! the choice of color LED logo remains Benin, because remember that your hand covers your mouse when you use it then .... The specific weight to suit the mouse needs. 4 Character mini-weight enough for me. especially compared to the easy slips on the Gamer Anker carpets. (Of the same brand) a nice lil back if you order both. Your turn now ...