Specifications：
Bluetooth version: V5.3 AC6955F
Bluetooth protocol:support
TF card：support
Channel system: stereo sound
Battery capacity: 300mAh
Charging time: 1.5h
Music time: ≈25h
Call time ≈ 13h
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
User manual: Chinese and English
Accessories: USB charging cable, user manual
