... the DPI freely; Smooth moving and high positioning precision; High-end mouse,shooting 1500 images per second. 1> Optical Tracking.2> With ergonomic design, wireless mouse ... wireless transmissionTransmission distance10 metersColorAvailable in various colorsInput powerOnly need one No.7 batterySystem requirementsWindows98,ME,2000,XP,2003,X64,IBMReceiverUSB 2.0 2.4G Wireless optical mouse DPI ...