●Stereo Bluetooth headset
●Bluetooth chip: CSR
●Bluetooth edition: V2.1+EDR
●Work frequency: 2.402GHz-2.480GHz ISM Band
●Frequency response: 20HZ-20KHZ
●Transmitter standard: Class 2
●Speaker power rate: 2*15mW
●Working time: About 8 hours
●Power voltage: 3.7V Li-ion polymer battery