GT103_HX4
> Version: Bluetooth 5.0
> Chip: Jerry AC6925D
> Support: HFP A2DP & AVRCP
> Distance: About10m
> Frequency: 2.402 -2.480GHZ
> Battery capacity: 400mAH
> Charging time: About 1.5 h
> working voltage: 3.7v
> Working current: 25mA
> ANC: 10mA (rated) 80% volume
> Working time: 15h
> ANC: 40h
> BT&ANC: 12h
> ANC Style: Back fed active ANC
> ANC Chip: TI
> Diameter: 40mm
> Unit impedance: 32ohm
> Speaker sensitivity: 105dB