OS Windows 10/8/7/Vista/XP, Mac OS X 10.4 or later, Linux Dimensions 86.5*54*36mm Charging time 5 hours Battery 3.7V/1000mAh Li-polymer battery Button 3 (Left key, right key, scroll) Charging input 5 hours Receiver Nano receiver Connectivity Wireless RF 2.4GHz , Wireless range: Approx 10 meters Projector Display Native Resolution 1200 DPI Sensor Sensor Blue-tech optical sensor Battery Battery Voltage 3.7V/10mA (mouse) / 5V/30mA (USB receiver) Battery Stand-by Time up to 126 days on a single full charge