Professional high-precision optical tracing engine， precise positioning.Resolution reaches up to 2400DPI. Adjustable resolution features among 800 / 1200 / 1600 / 2400 DPI.6 buttons， including scroll wheel， left button， right button， advance， retreat， DPI switcher.Total 7 bright colors showing in turns， give you a colorful visual effect.Ergonomic shape， special feel good.Compatible with Windows 98 / XP / Vista / 7 / 8 or latest. Intelligent connectivity， no need to code， plug and play.Suitable for high-end players， gaming professional players.Specifications:Connection way: USB cable Tracking systems: OpticalMax DPI: 2400DPISupported system: Windows 98 / XP / Vista / 7 / 8LED light colors: 7Cable length: More than 140cm / 55inItem size: 12.5 * 7.5 * 4 cm / 4.9 * 3 * 1.6in (L * W * H)