Audi Wireless Optical Mouse in Silver finish is a computer mouse with 2.4 GHz wireless technology; USB Plug & Play technology; Adjustable High-resolution optical for 1200 dpi or 2000 dpi scanning; 33 foot range; LED headlights and rear lights; On/off switch for LED headlights and rear lights; 1xAA battery last for several months (if LED headlights and rear lights are not used; System requirements: Windows 8/ 7, Vista, XP, 2000, ME, Mac OS X.