Whats in the box:1st Stage, 2nd Stage. Din/Yoke Adapter, LP Hose
First Stage The Flathead VI internal structure allows for a very direct airflow through the 1st stage, providing exceptional performance. It is also very low in profile, barely extending above the tank valve, and places the low pressure hoses directly out to the sides, in a pattern preferred by many divers.
Second Stage Zeagle's ZX Second Stage is lightweight, compact and comfortable, with diver adjustable resistance controls, freeflow control, and built in anti- freezing features. Specific design changes have created a regulator that is resistant to freeflow on the surface, yet has incredible smoothness and ease of breathing underwater.
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Zeagle Regulators Specifications & Features Comparison Chart