Features of a compact, contemporary keyboard Number pad, low-profile scissor keys, and a Windows-optimized layout A comfortable ambidextrous three-button mouse featuring a mechanical scroll wheel and highly accurate optical tracking You and those around you can work in complete silence thanks to a whisper-quiet keyboard and a noise-reducing mouse that has been tested in a lab. * Wireless range may vary depending on computing and environmental conditions, but this straightforward plug-and-play USB Nano receiver provides a strong, dependable 2.4 GHz wireless connection with a range of 10 meters (33 feet). **Battery life may vary depending on user and computer conditions, but the auto-sleep feature saves battery life, allowing for 36 months of keyboard use and 18 months of mouse use.