For those quick memos, nothing beats Sony's BM-575A Portable Microcassette Recorder / Dictating Machine. Features include Switch Operation and Voice Operated Recording.

 

Portable Microcassette Voice Recorder Dictating Machine BM575A

Features slide switch operation, metal case, voice operated recording, fast playback, microphone jack, earphone jack, record/battery LED, fast forward, tape counter, multi speed operation. AC adapter sold separately. Uses two AAA batteries.

Technical Details

• Slide Switch Control Operation
• Metal Case
• 2-Speed Operation
• 3-Digit Tape Counter
• Voice Operated Recording (VOR)