This is a Sony M-100MC MicroCassette Voice Recorder. This will work with MicroCassettes but not MiniCassettes. A voice recorder is also sometimes known as a dictaphone – it is used to record audio e. Interviews, dictation, lectures, notes, etc onto a cassette which can then be played back at a later date. Photos are of the actual item. Please review all photos for full cosmetic condition. Works with MICRO-Cassettes (not MINI-Cassettes). Includes Mic windscreen, alkaline batteries (installed), user guide and a microcassette. 3 Microphone Modes (Lecture / Meeting / Dictation). 3 Digit Tape Counter. Voice Operated Recording (VOR). 3 LED Battery Level Indicator System. Tape Microcassette (normal position type). Recording system 2-track 1-channel monaural. Tape speed 2.4 cm/s, 1.2 cm/s. Output Earphone jack (miniack/monaural) for 8 – 300? Earphone. Power output (at 10% harmonic distortion): 220 mW. Power requirements 3 V DC Two R6 (size AA) batteries. 126.0 × 68.0 × 40.8 mm incl. Projecting parts and controls. Will my cassettes work in this unit? This unit uses MicroCassettes. It will play and record on MicroCassettes. MicroCassettes are easily confused with MiniCassettes. If you are unsure what type of cassette you have, please check the size of your cassette. A Mini-Cassette measures 2 1/4″ x 1 1/2″ (55mm x 33mm). A Micro-Cassette measures 2″ x 1 1/2″ (50mm x 33mm). Do you provide a guarantee? May I collect the item in person? I use recycled packaging where possible. When checking out, please check that your address is correct as I will post to the address you have given at this point.