EntityQ2880444· pop 13· linked from 28 articlespersonal stereoSign in to saveportable audio player using an audiocassette player, battery power and in some cases an AM/FM radioConnectionsWalkmanEntitymobile phoneEntitytransistorEntitysmartphoneEntityintegrated circuitEntityIPodEntityheadphoneEntitycompact cassetteEntityaerobicsEntityAkio MoritaEntityFM broadcastingEntitymedium waveEntityMasaru IbukaEntityCD playerEntitygeneric trademarkEntityportable media playerEntitylong waveEntityAM broadcastingEntityNokia N79Entityportable audio playerEntityCategoriesJapanese inventionsPortable audio playersProducts introduced in 1979