Logitech MK275 Wireless Keyboard and Mouse Combo

Reliable 2.4GHz Wireless Connection: A tiny Logitech Nano-receiver connects both the keyboard and mouse using just one USB port
Long Battery Life: Get up to 24 months of keyboard power and 12 months of mouse power without changing batteries
Eight Hot Keys: Instantly access your movies, music, the Internet, e-mail, volume, play/pause and more ; Battery: 2 AAA (keyboard) and 1 AA (mouse) batteries ; Reliable connection up to 10-meters
All-in-One Setup: Includes a full-size keyboard with quiet, low-profile keys plus a portable contoured mouse for comfortable control
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