Awei T67 Air Conduction TWS Bluetooth Earbuds

1.Bluetooth version: V5.3 AD6973D4 2. Supported protocols: A2DP HFP AVRCP 3. Battery capacity: 65mAh (The headphone battery does not come with a protection board, the headphone board has a lithium battery protection IC) 4. Charging compartment battery capacity: 400mAh (with protective board) 5. Charging time: 1.5H 6. Talk time: 7.5H 7. Play time: 8.5H 8. Standby time: 200H 9. Speaker specifications: 10*8.5*2mm square speaker 10. Sensitivity: 119+/-2dB (800MV 1KHZ) 11. Impedance: 30ohms +/- 15% Ohm, at 1KHz 12. Output power: 21mW