Soyntec Inpput R481. Device interface: USB, Movement detection technology: Optical, Movement resolution: 1000 DPI. Cable length: 1.35 m. Mouse dimensions (WxDxH): 100 x 58 x 35 mm, Mouse weight: 77 g. Compatible operating systems: Windows VISTA/XP/2000/Me/98SE, Mac, Linux, Gross weight packaging: 0.180 kg, Packaging height: 140 mm