Model: M750 Working mode: Wired Tracking engines: Optics Number of Keys: 6 key DPI: 1200/1600/2400/3200 DPI Lighting System: about 16.8 milion color RGB Acceleration: 50G interface: USB2.0 Cable Length: 1.6m Number of counter weights: 1Pcs Product dimensions: L68xW38xH127mm