BH38
Chipset: BT V5.4(JL7006F4)
Supported protocols:A2DP. AVRCP, HSP,HFP
Transmission range: 10 meters
Transmission friequency.2.4GHz
Charging voltage: DC 5V
Charging time:about 2 hours
Talk/music time: about 40 hours
Headset battery capacity : 400mAh
Speaker: 40mm
Speaker sensitivity:118+-3dB
Impedance:32Ω+15%
Speaker frequency. 20H-20KHz