This sound system comes with several functions as shown below;
Bluetooth Function
Model: DJ-503
On/Off Power Switch
USB & SD Input(MP3 Player)
Three Small Speaker
Drive Units: 6.5"*1+3"*3 With FM Radio
Inpedance: 4 ohms
Total Output Power: 60W
Frequency Response: 38HZ-20KHZ
Distortion: 0.3% at 1W