Product Description - Sony Pressman Micro-Cassette Recorder M-530V 2-Level Voice Operated Recording Tape Counter Sonymatic recording level control Cue and Review Control Battery Indicator Voice-operated recording system (VOR) ~ Sonymatic recording level control ~ Edit function ~ 3-Digit tape counter ~ Automatic shut-off ~ Stop-pause-release function ~ BATT lamp dims, indicating when to replace batteries ~ Cue and review with slide control ~ Frequency range 300-4,000 Hz.