Bluetooth audio

Product size (unit: mm): 180x90x80mm (length * width * height)
Output power: MAX 3W+3W
Speaker: Ф52mm 3?? 5W
Frequency response: 80-20KHz
Signal to noise ratio: >=80db

Power supply: built-in 4000mA polymer battery
Power supply: 5V>=1000mA
Charging mode: USB to standard DC connection
External audio: standard 3.5 stereo plug input
Audio type: two-channel stereo
Bluetooth effective receiving distance: within 15 meters