Successful work on any surface (technology V-Track) Radius - 10 m 4D-scrolling wheel. The software allows you to navigate in four directions. Features Sensor Type: V-Track Resolution: 1000 dpi Interface: USB 2.0 Air Interface: 2.4 GHz Radius: 10 m Power supply: 1 AA battery Compatibility: Windows 2000, XP, 2003, Vista, Win 7 8 10 Color: Black