• High-performance pneumatically balanced mechanism for consistent airflow

• Adjustable control knob allows customized breathing resistance

• Heat sink connection helps warm inhaled air for cold-water diving

• Comfortable silicone mouthpiece minimizes jaw fatigue

• Lightweight construction with surge deflection front cover and chrome trim

• The alternate second stage features a fluorescent yellow soft cover paired with a 36-inch yellow braided hose, making it highly visible and easy to identify underwater.

• Breathing resistance setting @ 1.1-1.3 inch of wate