Rii RM600 Game Mice with Colorful Breathing Light-1000/1600/2400/3200 DPI Gaming Mouse for PC , 7 Buttons 1.Interface: USB 2.0 and 3.0;Adjustable DPI Switch: 1000/1600/2400/3200 Tracking systems: Optical ; Ergonomically designed, long-term use without fatigue The length of the wire: 1.5m/5ft;Switch Life:&gt;5000000times Ultra-precise Scroll Wheel; Fire key fast response, repeating 3 key; 5.7 color dazzle color;7 buttons with scroll wheel;Compatibility: WINXO, WIN7,WIN8,MAC