The MIC-SJ55 electret sub-miniature microphone capsule has been provided with a moulded plastic housing and cable for convenient on lapel or tie for communications, public address, music recording and other applications. 

This microphone features a flat, extended frequency response suitable for reproduction of voice or musical instruments. A 1.5 metre long black shielded cable of 2.5mm diameter is provided in the basic configuration. This cable includes two wires plus a spiral wound shield, which are soldered to the microphone capsule. A composite steel retainer plus moulded elastic strain relief provide a very rugged miniature package. Noise transmission from handling and clothing movement is very low. The LM-55 has a wide band omni-directional polar pattern. Internal RFI suppression is included.