Specifications
Bluetooth： V5.3
Support Bluetooth protocol ：A2DP/AVRCP/HSP/HFP
Bluetooth operating frequency：2.402GHz-2.480GHz
Receiving sensitivity （TYP）：-42d±3dB
Bluetooth effective distance：≤10 meters
Horn power： Rating 5mW
Channel system： Stereo sound
Frequency response：20Hz ~20KHzA
Built-in battery：280mAh
Charging input standard： DC5V/1A
Charging time： about 1.5 hours
Bluetooth V5.3/20 hours of music