You cannot breathe directly out of a scuba tank because of the high pressure. A regulator reduces pressure to safe a level that can be inhaled by the diver. A diving regulator has two parts: the First Stage reduces the tank pressure and connects it to the Second Stage which contains the mouthpiece for breathing
Designed for divers seeking reliable performance in an uncomplicated air delivery system, the balanced diaphragm MK11, with its chrome-plated brass body specially designed to reduce size and weight, is an ideal travel companion. Its system features internal parts that are sealed from the elements. The full-featured S560 second stage, built with a rugged nylon fiberglass case, is lightweight too, and also easy to use. Delivering consistent airflow, ease of use and dependability, this reg system is just the ticket for recreational divers in general, and dive travelers in particular.
Chrome plated brass body
Cold water Anti-Freeze protection & Dry chamber
Low pressure ports 4 (2 HFP), High Pressure Ports 2