1. Plan version: Bluetoth 5.0 bilateral call
2. Effective operating distance: 10m
3.Earphone battery capacity: 30mAH Battery capacity of charging bin: 300mAH
4. Music playing time and talk time :3 hours
5. Headset standby time :70 hours
6. Earphone charging time :2 hours
box charging time: 3 hours
7. Bluetooth protocol: A2DP1. 2 / AVRCP1.0 / HSP1.0 / HFP1.5
8.Loudspeaker specification: 10mm 32 ohm 9.Microphone sensitivity: 93 dB
10. Frequency response range: 20HZ-20khz