Second Stage ZEO
- Pneumatically balanced second stage automatically maintains consistent inhalation effort throughout dive
- Diver adjustable inhalation effort allows the diver to control a desired level of airflow at any time.
- Patented Dynamic Adjustment automatically maintains inhalation effort throughout the dive
- Adjustable Venturi Switch (A.V.S.) for simple dive/pre-dive adjustment
- Inline ball swivel reduces jaw fatigue
- Orthodontic mouthpiece
- Paired with the FDX-i first stage