* Rotary top cover . Mixed * Left/Right Channel output S / N Ratio(Signal/Noise Ratio) ≥68 dB ,MP3                                                                                                                                                                                     *   FM:87.5(64)~108MHZ 50K(100K)/Step                                                                                                                                                                                      *  Maximal Number of the Preset Stations:FM20                                                                                                                                                                                           *     10% Distorted Power Output/ Impedence                                                                                                                                                                                 * 2x5w