Shenzhen Wofly Technology Co., Ltd. [China]

1.read SD,TF card 2.play songs in MP3,MP4,IPODIPHONE 3.built-in Li-thium battery 4.with aluminum material 5.usb supply power

specification:

Output power: RMS 3W THD=10%Frequency Response: 150-18KHzLoud Speaker: 1.5inch; 4ΩSignal and noise ratio: more than or eaqul to 80DbOutput: 5.0VAccessories3.5mm stereo connect cableUSB power supply cable 

picture show:

Aluminum TF card speaker