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model D580 Types of radio/tape recorders radio Channel selection method Automatic, Memory Sound quality selection Mono channel function USB interface, one click restore, digital display, built-in speaker Number of radio stations stored thirty Signal to noise ratio ≥75dB（dB）（dB） Rated voltage 220（V） Rated power 7（W） Rated frequency 522---1620K（HZ） Encoding chip type Jerry texture of material ABS External dimensions 166*52*78mm weight 550g Battery specifications 5000mAh intended for public Radio tuning method Digital tuning Vocal tract Mono channel Packaging List Emergency radio, mountain entrance, charging cable, instruction manual Band type Full band Supporting formats MP3 impedance eighty