Specifications：
Bluetooth version: V5.3 AC6955F
Bluetooth protocol:
Channel system: stereo sound
Battery capacity: 300mAh
Charging time: 1.5h
Play time: ≈12.5h
Call time ≈ 10.5h
Horn diameter: 40mm
Horn impedance: 32Ω
Horn sensitivity: 113±3dB
Best transmission distance: <1m
maximum transmission distance: 10m
bluetooth operating frequency: 2.402ghz~2.480ghz
wearing method: headset
charging interface: type-c
size: 20*17*8cm maximum="" transmission="" _distance3a_="" 10m="" bluetooth="" operating="" _frequency3a_="" _2.402ghz7e_2.480ghz="" wearing="" _method3a_="" headset="" charging="" _interface3a_="" type-c="" _size3a_="" />