Wireless Vertical USB Laser This superior J-Tech Digital wireless vertical laser adopts scientific ergonomic design, it can effectively prevent the Carpal Tunnel Syndrome. Its unique shape supports your hand in an upright neutral posture that generally avoids forearm twisting. Using laser sensing technology, it has advanced sensor performance. Compact size and excellent sensitivity, convenient to carry and easy to operate, all of these characteristics make it stand out from the crowd.With it in charge, you will operate freely. Features: Material: Plastic ABS Connectivity:: Wireless Operation distance: 10 metres Interface: USB Button: 3D5K+wheel+DPI transition Resolution: 800-1600 dpi Scanning Rate: 8000fps Tracking Method: Laser Max. Acceleration: 8G Operation System: Windows XP / Win7 / Vista, Mac OS X 10.4 Battery: 2 x AAA Batteries Voltage: 3V Current: