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Scubapro 2ND STAGE X650
X650 Second Stage Based on the renowned D400, this one of a kind second stage includes a unique valve design. With new break through design and components, this extraordinary second stage offers the best performance on the market. - Straight coaxial flow valve. The air flow goes directly into the mouth to prevent any loss in performance.
- New smaller poppet. With quicker dynamic response to inhalation demand.
- Diaphragm and exhaust valve positioned below the mouthpiece. This structure, in combination with a streamlined shape and lighter weight minimizes jaw fatigue.
- New 15% wider exhaust valve20% less exhalation effort than the other second stages.
- Dive/pre-dive control switch. To prevent accidental free flow.
- New diver adjustable inhalation control. To quickly increase or decrease the inhalation effort and fine-tune the second stage to any diving condition including cold water. A unique design with asymmetrical ribs to prevent excessive unscrewing and to have the clear perception of zero" point.
- Lightweight orthodontically designed mouthpiece. Comfortable reducing jaw fatigue and gum irritation.
- Also available in Titanium version
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