1)mp3 speaker 2)USB Interface 3)With USB Driver Slot 4))With SD/Mrico SD Card Slot

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360 degree Button with Louder SpeakerPower: 3W*1; 1 X Bass POP Speaker: 1.5" X 2 4Ohm Antimagnetic Frequency Response: 100Hz-20KHz Input sensivity: 600mv S/N: ≥80dB Separation: 60dB; THD: 0.75%; Input Voltage: 5V

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