2018 OTS Guardian Black Full Face Scuba Mask Industrial Grade FFM field-tested by Commercial, Public Safety and Military Divers around the world. Double Sealed, 5-Point Spider Easy Adjust Head Strap, Customizable Equalization System, Compatible with through water or wired comm systems. Quick Release, Balanced Downstream Demand Valve 2nd Stage Regulator ABV-1 Ambient Breathing Valve allows the user to breathe ambient air at the surface conserving air. Includes: Guardian Black/Black FFM, Equalization System, ABV-1 Valve, Custom 2nd Stage Regulator, Low Pressure Hose, Deluxe Protective Vented Bag. Ready to dive out of the box.