USB PS/2 3 Button/1 Wheel RF Wireless Optical Mouse (Silver/Blac

Ergonomic and innovative design, 800dpi Optical Resolution, Long Battery Life. Features; 800dpi Optical Resolution; Long Battery Life; Digital High Frequency RF Technology; Optical Tracking System; Ergonomic design; USB & PS/2 ; Long Battery Life Super efficient battery life. 2 AA batteries can be used for up to 3 months. ; Digital High Frequency RF Technology Adopts reliable FSK mode. RF distance up to 2 Metres. ; Optical Tracking System Uses the most advanced non-touch optical sensor for quick and high precision movement. Not suitable to use on glassware‚ dark coloured surfaces and other very smooth surfaces. ; 800DPI Optical Resolution Adopts the latest optical technology for maximum precision and speed. ; Comfortable Design Ergonomic and innovative design creates an easy to use and comfortable Optical Mouse.