A4Tech Mouse GGG Design LA Nature beige. Device interface: USB, Movement detection technology: Optical, Movement resolution: 800 DPI. Mouse dimensions (WxDxH): 57 x 97 x 37 mm, Mouse weight: 70 g. Compatible operating systems: - Windows 98SE/ ME/ 2000/ XP/ MCE2005/ XP(x64)/ 2003(x64)/ Vista(x86) - Mac 8.5 - 10.X