| Bluetooth version: 5.2 Transmission range: 10 meters Sensitivity：98±3dB Frequency response：20Hz-20kHz Speaker: 10mm Battery capacity: 45mAh*2+470mAh Charging voltage： 5V/0.5A Charging time：1H（earphone）,2H（charging case） Play time: 5H(100% volume) Talking time: about 4H |
