This is the OTS Super Mic for Guardian FFM Full Face Mask Features: Earphone and microphone assembly designed for OTS Guardian full face masks Push-to-talk control Hi-USE connector Hot-Mic-noise cancelling, salt-water resistant, pressure resistant, studio quality microphone Dual earphones OTS EM-OTS2-SM Guardian Comm/Super Mic for the OTS Guardian Full Face Mask, Super Mic, Dual Earphones, Push To Talk Control and HiUse Connector. Earphone/Microphone Assemblies are designed to allow the user to connect either Hard-wire or Through-water communications to a helmet or full face mask (FFM). Due to the many styles of FFM on the market, OTS offers a wide variety. The configurations can be endless depending on the application. The following configurations are the most commonly used. Custom Earphone/Microphone (E/M) Assemblies can be manufactured upon request. ME-16R Hot Mic noise canceling, salt-water resistant, pressure-resistant studio quality microphone. Super Mic is a water proof, pressure tolerant ceramic microphone with a compact, lightweight design and noise cancelling properties reducing background noises for clearer communications.