Bluetooth version: 5.1
Protocol: HFP 1.7 / HSP 1.2 / A2DP 1 / AVRCP 1.6 / SPP 1.2 / PBAP 1.0
Noise reduction version: CVC 8.0
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