Specifications of Logitech MK270r Wireless Combo KeyboardGENERAL SPECIFICATIONSInterfaceWirelessBrandLogitechInternet KeysYesRange10 mModelMK270rSales PackageKeyboard, Mouse, Nano-receiver, 2 x AAA (Keyboard) and 1 x AA (Mouse) Batteries, User DocumentationTypeKeyboard & Mouse ComboBattery2 x AAA (Keyboard) and 1 x AA (Mouse) BatteriesPart Number920-004500/920-004498/920-006316OS SupportedWindows: XP, VistaBattery Life24 Months (Keyboard) and 12 Months (Mouse)Multimedia KeysYesFeaturesAdvanced 2.4 GHz Wireless Range, On-the-go Mouse, Extended Battery Life, Eight Shortcut Keys, Full-size Keyboard, Long-range Wireless