Gigabyte GM-M7000. Device interface: USB, Movement detection technology: Optical, Movement resolution: 800 DPI. Colour of product: Black, Certification: CE, FCC, BSMI. Mouse weight: 81.2g. Compatible operating systems: Windows 98/2000/ME/XP/Vista, Mouse dimensions (WxDxH): 57 x 97 x 37.3 mm