The BCD is the volumetric axis of the diver. It compensates for the loss of buoyant volume as water pressure compresses the exposure suit.
The core mechanical components must deliver a reliable gas supply at ambient pressure, regardless of depth or physical exertion. The Breathing Regulator buy scuba equipment
Note: Any used regulator or BCD acquired must undergo a complete professional overhaul and oxygen-cleaning at an authorized service center prior to its first pressurized use. The BCD is the volumetric axis of the diver