1. Output: 2.0 channels; 
2. USB input; 
3. Aux input (composite coaxial input); 
4. AUX output (composite subwoofer output); 
5. Karaoke function (section U); 
6. Wireless Bluetooth function; 
7. Plastic shell with built-in DSP output; 
8. Infrared remote control function; 
9. LED digital screen display; 
10. Power supply: 7.4v2500ma power battery; 
11. Output power: Left and right channels 15W *2 total power 3OW r.m.s