Noise reduction level:25dB
Bluetooth chipset :Airoha 1536P
Battery: 50mAh*2+1000mAh
Speaker: Φ6MM
Bluetooth Version:Build V5.0
transmission frequency:2.4GHz
Talk time: 5 hrs
Transmission distance：30m
Charging time: 2hrs
Working Current:12mA
Standby Current:1mA
Data interface: USB2.0
Input interface：USB stereo
Function:
Control Volume and Calling
Music Previou/Next/Pause