HBQ-Q32TWS Stereo Super Mini Wireless Headset v 5.0 + EDR 

(Bin 29)

The features include

Impedance : 8mm 32 

mic sensitivity -42db

wireless frequency 2.4 GHZ

Battery Capacity 50m AH Working temperature 10-60C

Charging Voltage dc5v

Transmission Distance 10m

Playing Time about 4 hours

Charging Time about 1 hours

Standby time 120 hours  

IOS power supply

Intelligent noise reduction

Voice reminding