Logitech Wireless Combo MK270 - Retail - USB Wireless RF 2.40 GHz Keyboard - English - Black - USB Wireless RF Mouse - Optical - Scroll Wheel - Black - Multimedia, Internet Key, Email, Play/Pause, Volume Control, On/Off Switch Hot Key(s) - AA, AAA (PC) - 1 Pack Keyboard and mouse set features 2.4 GHz wireless connectivity to give you a reliable connection up to 10 meters away with virtually no delays or dropouts. Plug-and-play simplicity allows you to plug in the nano receiver and start using your mouse right away with no software or hassles. The tiny wireless receiver is so small and unobtrusive that you can plug it in and forget about it. Built-in storage compartment in the mouse lets you take it wherever you use your computer. A 24-month keyboard, 12-month mouse battery life, auto-sleep and on/off switches let you explore, shop and search for months without the hassle of changing batteries. Eight keyboard hot keys help you save time by providing instant access to your most-used applications like email, Internet and volume up/down. A full-size, spill-resistant keyboard with low-profile, whisper-quiet keys, F-keys and a number pad is comfortable, convenient and built to last for easy use.