This is a BIBS (Built-In-Breathing-System) style half mask with incorporated balanced 2nd stage SCUBA regulator.
Allows comfortable topside breathing from SCUBA cylinders without jaw/mouthpiece fatigue. Particularly useful for breathing nitrox or oxygen in an emergency when a medical oxygen kit is not available.
Regulator is not supplied oxygen clean - use only to 40% EAN or oxygen service prior to using with >40% EAN.
This assembly is an integration of distinct components which are independently tested and approved for their respective uses. The assembly's performance has not been verified against any known standards and should be used at the end-users discretion only.