Specifications:
Output power: 4*3W
Working voltage: 3.7V
Frequency Response: 100HZ-19KHz
SNR: ≥80dBA
Distortion:<2%
Audio input:Bluetooth,AUX, MP3,
WAV Speaker: Diameter 36mm, 4Ω/3W
Input power: 3.7V, 2200mAh lithium battery or external 5V DC power supply
Input sensitivity: 600±mV