Original Zelotes 5500 DPI MASTER T80 2nd Generation 7 Button LED Optical USB Wired Gaming Mouse Mice for Pro Gamer (Scorpion) Hand Orientation: Right Hand Maximum dpi: 5500 DPI Distance: 5 FT Windows Vista: Works with Windows Vista Operating System Supported: Windows 2000/ XP/ Vista; Mac OS X System Requirement: USB port Version: Standard Package Contents: 1 X 5500DPI Gaming Mouse