First Stage
* Over-balanced diaphragm.
* Auto-Closure Device (ACD). * Environmental dry chamber.
* Air Turbo System.
* 2 high-pressure ports and 4 low-pressure ports.
* Black polyurethane coating.
Second Stage
* Adjustable Balanced.
* Diver-controlled Venturi Adjustment Switch (VAS).
* Inhalation adjustment.
* Built-in heat exchanger.
* Exclusive Comfo-Bite mouthpiece.
* Gold accent ring.
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