Breathing 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.
 
Halcyons H-75P offers excellent performance in all conditions with a consistent gas delivery making breathing smooth. This is a robust flow through air balanced piston regulator that has proven its worth over the years and suits all divers, whether you wish to cruise along a tropical reef or the back of a virgin cave.
Five high flow low pressure ports situated on a turret gives you full control of hose routing for your setup.
Two opposing high pressure ports help support your optimized routing regardless of configuration
Nitrox 40% compatible straight out of the box.
Possible to upgrade to full oxygen clean