Canyon CNR-MSOPT6. Device interface: USB+PS/2, Movement detection technology: Optical, Movement resolution: 800 DPI. Mouse dimensions (WxDxH): 65 x 115.4 x 36.2 mm, Mouse weight: 87.6 g. Package dimensions (WxDxH): 181 x 49 x 153 mm, Package weight: 215 g. Compatible operating systems: Win 2000/95/98/ME/XP/Vista