Bluetooth version:5.4  BT8931H

Speaker size: 40mm

Impedance: 32 Ohm

Sensitivity: 110dB +/-3dB

Frequency response: 20Hz-20kHz 

Support profile:A2DP/AVRCP/HFP/ATT/GAP/SDP/GATT

Transmission range: ≥10m

Built-in rechargeable battery:500mAh

ANC OFF Music play time: ≤60h    

ANC ON Music play time: ≤40h  

Charging time: ≤2h                    

Charging port: Type-C