very good reviews
With the Logitech Wireless Desktop MK250, just plug the mini-receiver into your computer and you'll enjoy instantaneous wireless convenience even from across the room (up to a 10-metre range), even in the most crowded wireless environments. Plus, you'll get up to 15-month keyboard and six-month mouse battery life. The spill-resistant, space-saving footprint fits in most keyboard trays, saving space when space is scarce. And for your comfort, the flat keyboard design creates a natural typing feel that keeps you comfortable even after long hours. The contoured mouse is designed to fit comfortably in your hand while offering smooth, precise cursor control. Plus, you'll get a software-free setup. And the batteries are pre-installed. It's that simple.