Sony TCM-939 portable cassette recorder

Presentation and recording test of my Sony TCM-939 portable cassette recorder. This Sony cassette recorder is pretty basic, there's a DC bias cassette deck with automatic shut-off mechanism, a built in condenser microphone, an external microphone jack, an earphone jack and a DC 6 volts socket for using the unit with an external power transformer. There's also cue and review functions very usefull for searching a particular point on the tape.