Tws ANC Quad Mic ENC With Digital Display 2 in 1 Dual Wearing Ways TS-X37

Bluetooth Version: V5.4
Chipset: JL
Bluetooth Distance:10M
Impedence: 32ohm
Frequency Range: 20Hz-20KHz
IPX level: IPX4
Sensitivity: 110±3dB (at 1KHZ)
DB noise reduction: 25±3dB
Signal to noise ratio: ≥98dB
Battery: 40/400MAH
Driver Size: 13mm*2
The numbers of re-charge: >500times
50% volume Playing Time(ANC on) : 6H
50% volume Playing Time on(ANC off) : 7H
100% volume Playing Time(ANC on): 4H
100% volume Playing Time(ANC off): 6H
Material: ABS