Bornd 2.4GHz 800/1600 DPI Laser Wireless White  (A50 WHITE) Operation Range: 30-Feet Resolutions: 800 / 1600 DPI Buttons: 8 Compatibility: Windows 98/ 2000/ XP/ ME/ VISTA/ Win7/ Mac OS Taking the lead in 3D gyro technology 360 degrees 79 channels in hopping, with 2 group from 2.400GHz-2.4853GHz