KENSINGTON Pro Fit Retractable Mouse 80004518 K72339EU Product Description: Kensington Pro Fit Retractable Mobile - mouse - USB - black Device Type: Mouse Connectivity Technology: Wired - USB Colour: Black Dimensions (WxDxH): 5.4 cm x 9 cm x 3.5 cm Weight: 130 g Localisation: Europe Movement Detection Technology: Optical Buttons Qty: 3 Movement Resolution: 1000 dpi Features: Retractable cable Cables Included: 1 x USB cable - integrated OS Required: Microsoft Windows 7, Apple MacOS X 10.4 or later, Microsoft Windows Vista / XP Microsoft Certification: Compatible with Windows 7