Rainbow R8653B. Device interface: USB, Movement detection technology: Optical, Movement resolution: 1600 DPI. Cable length: 1.75 m. Mouse dimensions (WxDxH): 129 x 82 x 47 mm, Mouse weight: 0.122 kg. Compatible operating systems: Windows 98. Windows 98SE. Windows Me. Windows 2000. Windows XP. Windows 2003. Windows Vista.