Portable Speaker 1.SD card, USB playing,Line-in, FM Radio, 2.Rechargable li-battery 3 Volume Control...

Portable SpeakerSD card, USB playing,Line-in, FM Radio,  

1) AC100-220V, 50/60Hz          DC5.5V±5%

2) Output: RMS 4Ω  (3W+3W)THD=10%

3) FM radio frequency response: 150-18000Hz

4) Signal and noise ratio of power amplifier: ≥80dB

5) Rechargeable Li-ion Battery: 3.7V / 800mA

6) Loudspeaker: 2inch (external diameter 52mm)   Magnetic resistant: 4Ω

7) For use with: Mobilephone/Ipod/PSP/MP3/MP4/usb/micro sd

Portable Speaker