Bluetooth headset｣ｬ CSR8615｣ｬ4.0program｣ｬ excellent sound quality｣ｬ stable performance｣ｬ high grade burst<br /><br />Technical parameters:<br /><br />1｣ｬ Bluetooth version: V4.1+EDR downward compatible with V3.0｣ｬ V2.1｣ｬ V1.1<br /><br />2｣ｬ transmission power: Class2<br /><br />3｣ｬ transmission frequency: 2.4GHz<br /><br />4｣ｬ transmission distance: 10 meters barrier free<br /><br />5｣ｬ talk time: 8~10 hours<br /><br />6｣ｬ standby time: 120 hours<br /><br />7｣ｬ support the file format: A2DP music playback｣ｬ headset and handsfree mode<br /><br />8｣ｬ voice answer the phone｣ｬ YES answer｣ｬ NO hang up