portable sound systems 
Small self-contained sound reproduction equipment that can be carried easily from one place to another.
personal radio cassette player
Portable cassette player that also contains a tuner.
Equipment used to receive signals transmitted by radio stations.
Device used to play back and record sounds on a recording tape cassette.
Rigid case containing a recording tape on which sounds can be recorded.
Sound reproduction device made up of two earphones mounted on a headband.
Button used to select a broadcast frequency.
Button that controls the loudness of the player.
Flexible band that holds the earphones on the ears.
Slot that takes the plug from the headphones.