1.FM radio

2.Support TF card and U disk autoplay

3. internal 500mAh Nokia battery or input by USB 5V

2.Stereo sound. Ultra-low sound

4.Audio input function

5.Impedance: 4 ohm

6.Built-in recharheable lithium battery NOKIA 5C 600maH3.7v 2-4hrs

7.Output power:RMS 3W x2

8.Frequency response: 90Hz-20KHz

9.S/N:>85dB