This microphone comes in the original box. Catalog number 33–1090B. I tested this using my cassette deck. I was surprised at how responsive this microphone is. Works perfectly. The Realistic PZM Pressure Zone Microphone 33-1090B is a condenser microphone with a small diaphragm size. It is a wired microphone with a on/off switch and can be mounted. The microphone is suitable for universal use and has been tested. The battery compartment has had some battery leakage, but cleaned up nicely as you can see in the photos.
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