Bluetooth version: 5.0 
Channel system: dual channel
Battery capacity: 3.7V/300mAh
Bluetooth protocols: A2DP, AVRCP, HSP, HFP
Standby time: about 16h (80% volume)
Charging time: 2h
Play time: about 16h (80% volume)
Talk time: about 10h (80% volume)
Frequency response range: 20Hz-20KHz
Best transmission distance: <1m
Maximum transmission distance: 10m
Speaker units: ∅40mm/32Ω( full-range speakers)
Microphone: -42±3dB
Wearing style: head-mounted
User manual: Chinese and English
Perfshihen aksesore: USB charging cable, user manual