Questions about this item:

212 Second Stage
Pneumatically balanced second stage
Patented Dynamic Adjustment once set automatically maintains inhalation effort throughout the dive by compensating for depth changes.

DC2 1st Stage
High performance over-balanced first stage provides progressively greater intermediate pressure as depth and gas density increases for superior gas delivery under the most extreme conditions
Compact & streamlined forged design provides the ultimate control over the internal air path for superior air delivery
Environmental sealing prevents internal corrosion, contaminants, and icing of the first stage
Designed to withstand the rigorous CE standard for coldwater performance

321 Octopus
This octopus is designed on the same platform as the high performance 221 2nd stage.