Bluetooth version: 5.1
Protocol: HFP 1.7 / HSP1.2 / A2DP 1 / AVRCP 1.6/ SPP1.2 / PBAP1.0
Noise reduction version: CVC8.0
Frequency range: 2.402GHZ ~ 2.480GHZ
Working distance: 10m
Charging input voltage and current: 5V Above 600mA
Headphone battery capacity:50mAh
Charging compartment battery capacity: 2200mAh
Headphone charging time 2 hours
Music playback time: 4-6hours
Talk time: 4-6hours
