Features: Compliant with Bluetooth V1.1, V1.2 Specification Support Bluetooth Headset, Bluetooth hands free, Bluetooth A2DP, Bluetooth AVRCP profiles Smart & nice appearance Low radiation Internal lithium polymer battery Long standby time High quality of voice communication Call transfer Incoming call reject Voice dialing Last number redial Mute function Simply operation LED indicator and tone alert for headset status General Specifications: Frequency Range: 2.4GHz~2.4835GHz unlicensed ISM band Output Power: Less than 4 dBm (class 2) Operation Range: Up to 10m (30 feet) outdoor Security: Pairing, encryption, authentication Stand-By Time: 200 Hours Talk Time: 6 Hours