Product Details：
Brand: Trusmi
model: BH03-01
Color: Black
Bluetooth version: JL7003/5.4
Battery capacity: 300mAh
Charging time: 3H
Standby time: about 3 years
Play time: 60% volume folk song 36H
Transmission distance: 10M
Speaker size: Φ40mm
Speaker sensitivity: 119 ± 3db
Impedance: 32 Ω ± 15%
Frequency range: 20Hz-20kHz
Microphone sensitivity: 32 ± 3db
Rated input (charging condition): 200mA
Audio interface: diameter 3.5
Voltage: 5V
Bluetooth/HFP/HSP/A2DP/ACRCP”
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