Second Stages

---

The Halcyon Halo Second Stage Regulator delivers smooth, high-volume airflow, ensuring natural breathing underwater.

• Balanced, adjustable downstream valve
• Adjustable inhalation resistance
• Compatible with up to 40% Nitrox
• Air Control Vane (ACV)
• Recommended bench testing by an authorized Halcyon technician before use

The Halcyon Aura Second Stage Regulator is engineered for reliable  performance and a smooth breathing experience. Whether you’re a new  diver or a seasoned explorer, the Aura offers excellent performance in a  durable, compact design.

• Downstream valve design
• Air-balanced second stage
• Compact and lightweight design
• Nitrox compatible to 40%

The Aura Yellow Second Stage offers exceptional reliability with a  vibrant yellow purge cover, ideal for use as an octopus or backup  regulator. It delivers smooth airflow and performance in demanding  environments.

• Downstream valve design
• Air-balanced second stage
• High-visibility yellow front cover
• Compact and lightweight design
• Includes standard LP hose (yellow)
• Nitrox compatible to 40%