Halcyon Halo Second Stage Regulator

The Halo Second Stage Regulator delivers smooth, high-volume airflow for a natural breathing experience underwater. Built to meet the demands of both technical and recreational divers, the Halo offers precision-tuned, high-performance air delivery with features designed for comfort, reliability and versatility.

Key Features:

• Balanced, adjustable downstream valve — ensures consistent, smooth breathing under all conditions.

• Adjustable inhalation resistance via easy-access side knob — allows divers to fine-tune breathing effort.

• Air Control Vane (ACV) — switch between “dive” and “surface” modes to optimize airflow or reduce free-flow.

• Compatible with up to 40% Nitrox — ready for enriched air diving.

• Comfort-mouthpiece included — reduces jaw fatigue during long dives.

• Seamless pairing with Halcyon first stages such as H-75P or H-50D — suitable as primary or backup regulator.

Why Choose the Halo?
With its balanced design and multiple breathing adjustments, the Halo is ideal for divers who demand top-tier performance, smooth breathing and reliable air delivery at all depths and tank pressures. Suitable for technical, recreational and CCR setups.