Logitech MK540 Advanced Wireless Keyboard and Mouse Combo for Windows, 2.4 GHz Unifying USB-Receiver - USB Wireless RF Keyboard - Black - USB Wireless RF Mouse - Optical - 1000 dpi - Scroll Wheel - QWERTY - Black - Media Player, Calculator, On/Off Switch,

Depend on this wireless keyboard and mouse combo to work perfectly every time you sit at the desk. Spill-resistant, full-size keyboard won't require new batteries for 36 months and your mouse stays powered for 18 months. Plug and play your keyboard and mouse with one tiny USB receiver with Unifying technology delivers a reliable and encrypted wireless connection up to 10 meters away with virtually no delays or dropouts. Convenient and essential hot keys give you direct access to media, calculator and battery check functions. All keys have been optimized for improved accuracy and reduced noise. Palmrest and adjustable tilt legs keep you comfortable for long stretches. Stay productive for hours with a wireless mouse designed to fit comfortably in either your right or left hand. The contoured shape and soft rubber side grips fit comfortably in your palm. Enhanced tracking and precise cursor control keep you in command.