Description:Tracking systems: Optical, Optical technology works on most electronic devices.Ergonomic Design: comfortable and great hand-feeling, can be used for a long time without fatigue.Built-in four-color soft and LED breathing light, strengthening the atmosphere of gaming with cool backlight.Programmable Design: 6 buttons can be programmed by installing software, you can personalize your mouse to fit you needs.Designed for gamer, adopting professional game chip. Universal Mouse for Windows 2000/XP/ME /Vista/win7 /Win8 operating system.Four gear DPI adjustable, each gear has five different DPI, meeting the needs of different games, and gaining the advantages over your opponents.Specifications:Model: A9.Material: plastic.Size: 135x80x40mm.Wire length: 1.8m.Color: black.Key Quantity: 6 Buttons(including wheel).Resolution: 1200/1600/2400/3200 DPI.Interface: USB.Light: LED colorful breathing light.Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package include: 1 * APEDRA A9 Mouse.1 * Package Box.