Version 1.2 Bluetooth Profile Supported: Headset and Handsfree Profiles Frequency Range:2.4GH Spectrum working Distance Range :10metres Weight（main unit）:Less than 12g(include battery) Charghing Time: Within 2.5 hours Talk time: Up to 5 hours Standby Time: Up to 200 hours Rechargeable Battery:Lithium Polymer,3.6V