Radio cassette player. Control knob being adjusted on a Hitachi radio cassette player. This device can be used to tune into radio signals, or used to play an audio tape cassette. The radio's aerial is seen at the back of the device in its retracted position, and the radio spectrum dial is seen across the front (for medium wave [MW] and frequency modulation [FM]). The tape cassette holder is at lower left, with buttons above it. The radio tuning knob is at far right, with volume and tone controls at upper centre. The sound is played through the speaker, at lower right. This radio cassette player is an electrical device, run off batteries or mains power.