Output power:3Wx2(RMS) or 8Wx2                                                                                                                             Frequency:20Hz-20KHz                                                                                                            Speaker unit: 52mm 4Ω   3Wx2                                                                                                                 Rated voltage: 3.7V/800mA                                                                                                                          SNR: ≥85dB                                                                                                     suport to MP3,USB, SD/MS/MMC card