Wireless range: 10 meters (Actual wireless range may vary based on use, settings, and environmental conditions)
18-month battery life - Go longer between battery changes thanks to energy efficient engineering. M220 SILENT automatically puts itself to sleep when not in use. (Battery life may vary based on user and computing conditions)
Comfortable shape, Mobile size - Ambidextrous design offers more comfort and precision than your touchpad. Its small size is perfect to toss in a bag and go.
Package Contents: Mouse, Nano receiver, 1 AA battery (pre-installed), User documentation