VicTake 2500 DPI Wireless Gaming Mouse Blue LED Wireless Optical Gaming Mice Game Mouse with ultra-precise Scroll Wheel for game player Mouse Grip Style: Adjustable Maximum dpi: 2500 dpi Hand Orientation: Right Hand Mouse Adjustable Weight: Yes Operating System Supported: Windows 98/ ME/ 2000/ XP/ Vista; Mac OS X System Requirement: USB port Package Contents: 1 x Gaming mouse 1 x E-3LUE USB 1x User Manual Parts: Every VicTake product includes a 45 days money-back and 12-month, worry-free Guarantee!