Precision and comfort with the Audi PC mouse in the abstracted form of the Audi R8 model. Wireless mouse with mini receiver and touch sensor. Frequency: 2.4 GHz. Resolution: 2,000 dpi. Interface: USB (1.1 or 2.0). Range: 5 -10 meters. Power supply: 2 x AA batteries. System requirements: Windows 7, Vista, XP and Mac OS. USB receiver located inside battery compartment.