Bluetooth V2.0+EDR Frenquence: 2.4-2.4835GHz Chipset:CSR BC4 Support profile: headset profile and handsfree profile Class 2 Operation Range: 10 meters (extended) Talk time: up to 5 hours Standby time: up to 100 hours Charging time: 1.5-2.5 hours Battery: Rechargeable polymer battery Size: 61*18*13mm weight:9g

Bluetooth Headset product offered by Cwell International Co.,LTD