Feature: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.Ajustable DPI Switch: 1000DPI(Red Light) / 1600DPI(Green Light) / 2400DPI(Blue Light) / 3200DPI(Purple Light) / 5500DPI(Orange Light).Ultra-precise Scroll Wheel.NOTE: We do not offer color choice. This product has 5 kinds of color which will change with the switch of the DPI.Specifications:Tracking systems: Optical.Buttons: 7 buttons with scroll wheel.The Max DPI: 5500DPI.Switch Life: 5 million cycle.Size: 128*85*39mm Cable Length:1515mmPackage Weight: about 162g.Compatible for Windows XP， Vista， for Windows 7， ME， 2000 and for Mac OS...or latest.User for: The high-end players， gaming professional players.Package Content:1 X Gaming Mouse