Output voltage: 3.7V-4.2V
Output power: 3W+3W
Input: DC 5V 1A
Loud speaker: 50mm, 5W*2
Signal and noise ratio (SNR): 65dB
Frequency response: 100Hz - 20kHz
Output distortion rate: ≤1%
Battery: 400mAh
Material: ABS plastic
Color: black/yellow/red/white/blue/OEM