Specification: Bluetooth version: V5.0+EDR Wireless frequency: 2.4GHZ Supporting agreement: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3 Transmission distance: 15-20 meters Battery capacity: 45mAh/350mAh Charging voltage / current: 5V / 1A Play / talk time: about 3 hours Charging time: about 1 hour Standby time: 60 hours Speaker impedance: ?10MM 32? Microphone sensitivity: -42Db Working temperature: -10-50 °C Feartures: Bluetooth 5.0, energy saving, improved …
