Logitech Advanced Wireless Combo MK540 US (920-008685) wireless keyboard and mouse combo with plug-and-play USB receiver

The MK540 Advanced is an instantly familiar wireless keyboard and mouse combo built for precision, comfort, and reliability.  The keys have been optimized for improved accuracy and reduced noise – Your keyboard stays powered for 36 Months and your mouse for 24 Months with no battery changes. Convenient and essential hot keys give you direct access to media, calculator and battery check functions.  One tiny Unifying receiver connects both the keyboard and mouse to your computer Advanced 2.4GHz wireless (10 meters)