Compact modern designed keyboard features Low-profile scissor keys, Number pad and an optimized layout for Windows Comfortable ambidextrous 3 button mouse with high precision optical tracking and mechanical scroll wheel Whisper quiet keyboard and lab-tested, noise-reduced mouse means an ultra quiet work experience for you and those around you Simple plug-and-play USB Nano receiver offers a strong reliable 2.4 GHz wireless connection with 10 meters (33ft) of range. Wireless range may vary based on environmental and computing conditions Auto-sleep feature saves battery life, allowing for 36 months of keyboard use and 18 months of mouse use, battery life may vary based on user and computing conditions