Sonpre mp3 speaker with usb port
1.Speakers:D40mm;
2.Built-in li battery

Description:

1.Applicable to many digital audio player like MP3, MP4, Laptop, PC, MD, Mobile phone, etc.                                                      

2.Patented expansile resonator will increase the low frequency outputting. It is very portable.                                                                                                                     

 3.Built-in rechargeable li battery protected by multiple circuits, enabling more than 4 hours…                                

4.Charging/audio input as a result,playing will be more convenient   

Atribute:

Size: 60mmx47.5mm;

Net weight:80g;

Speakers:D40mm;

Input:320 mV;

Output power:3W;

AMP freq range:180 Hz-18KHz;

Charge voltage:5V+0.5V .