... Speaker With FM Radio 1 Compatible with PC, MP3/4/5, music mobile, PSP 2 FM radio, Li-battery, RMS: 3Wx2 Portable Speaker With ... . Frequency Response: 60Hz-20KHz7. Signal to noise ratio: >85dB8. With earphone jack9. Built-in effective digital amplifier, sound more pure ... and perfect 10. With rope, stand11 External li-battery, convenient to carry12 Output: ...