Logitech MK270R 2.4Ghz Wireless Desktop Mouse and Keyboard Combo English/Korean Type English/Korean key type 2.4Ghz Wireless connectiong Long battery life (up to 2 years for key board, 1 year for mouse) with Logitech Nano receiver On/Off power button Plug and play simplicity for Windows PCs: Works right out of the box with Windows XP, Vista, Windows 7 and 8. No software installation required