Color: BlackButtons: 7 buttons with scroll wheel.Tracking systems: Optical.The Max DPI: 3200DPI.LED Light color : 5 light color gradual change (Red Light /Green Light /Blue Light /White Light)Ultra-precise Scroll Wheel.Optical technology works on most surfaces.Ergonomically designed， long-term use without fatigue.Intelligent connectivity， no need to code， plug & play.Built-weight iron， feel comfortable， mobile and stability.Switch Life: 5 million cycle.Size: 127(L) x 85(W) x 37(H)mm.Compatible with Windows XP， Vista， Windows 7， ME， 2000 and Mac OS...or latest.User for: The high-end players， gaming professional playersPlease note that slight color difference should be acceptable due to the light and screen.Package Content:1 x 7 Button USB Wired Expert Gaming Mouse