It features a red-colored reinforcement band in the upper part of the back

Halcyon aluminum backplate with harness and Cinch System for easy adjustment

ACCUTYPE 9

Easily inflated at depth

Works only with SANTI thermovalve and SANTI thermoconnector

Halcyon Halo second stage dpv It features a red-colored reinforcementBreathing underwater should feel natural and that experience you will have with a Halcyon second stage. With a smooth and steady high flow of gas you can feel comfortable on any dive. The Halo is a balanced downstream second stage that works perfectly with all Halcyon first stages. Adjustable inhalation control ACV setting for additional fine tuning of the breathing resistance.