Frisby FM-300K. Device interface: USB, Movement detection technology: Optical, Purpose: Office. Power source: Cable. Windows operating systems supported: Windows 7 Home Premium, Windows Vista Home Premium, Windows XP Home, Mac operating systems supported: Mac OS X 10.4 Tiger. Width: 6.2 mm, Depth: 11.3 mm, Height: 3.2 mm. Mouse dimensions (WxDxH): 6.20 x 11.30 x 3.20 mm