Portable travel of small speakers, with digital MP3 broadcast mobile memory card, USB hard disk, tape playback function high sensitivity FM stereo radio audio input, headphone port output power: RMS 2.5W ( harmonic 10%) frequency: 100Hz-20KHz signal to noise ratio 80dB impedance: 4 ohm source : DC 5 V

Portable travel of small speakers, with digital MP3 broadcast mobile memory card, USB hard disk, tape playback function high sensitivity FM stereo radio audio input, headphone port output power: RMS 2.5W ( harmonic 10%) frequency: 100Hz-20KHz signal to noise ratio 80dB impedance: 4 ohm source : DC 5 V