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
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