1. Bluetooth specification Bluetooth V5.3 Jerry AC6973D4
2. Transmission range 10 meters Transmission frequency 2.4GHz
3. Speaker: 13MM Impedance: 32Ω±15%
4. Frequency response: 20~20000Hz
5. Sensitivity: 98db±3db
6. Charging voltage DC5V. Charging time for earphones is about 1 hour. Charging time for charging box is about 1.5 hours.
7. Single side battery capacity of left and right ears: 40mAh Charging box battery capacity: 400mAh Product size: 64*55*30mm
8. Talk time 7 hours, music play time 7 hours (80% volume)
9. Product net weight: 50G Net weight of single ear: 4.4G