Adesso iMouseE20 2.4 GHz RF wireless Vertical Ergonomic Laser mousee with DPI switch button Hand Orientation: Right Hand Maximum dpi: 3200 dpi Power Supply: 2 x AAA Batteries Distance: Up to 30 feet Operating System Supported: Windows 8/ 7/ Vista/ XP/ 2000, Mac OS X & above System Requirement: USB port |