Multimedia Speaker
SD card & U disk support,FM
Built-in mp3 player
USB and Li-ion power-supply
Excellent bass performance

Technique&Parameters:
1.Speaker Specifications: 1.5-inch 4
2.Output power: 5W
3.Frequency response: 90Hz-20KHz
4.Sensitivity: 80db±2db
5.SNR: ≥80db
6.Distortion: ≤0.3%  
7.fade-in fade-out function , to protect the speaker from demage
8. memory store last song when power off
9. Support any capacity SD card &U disk
10.rechargable and replaceable  lithium battery