Working time (h) 4-5h,
– impedance 16ω,
– bluetooth version v5.0,
– earphone: 40mah*2,
– frequency response 20-20khz,
– microphone yes,
– 3.7v,
– charging time (h) 1-2h,
– transmission distance 10m,
– 3.7v,
– battery capacity...
Condition: Brand New,
Connectivity: Wireless