Mares HR Second Stage Regulator – XR LineMares HR Second Stage XR Line Precision Breathing for Technical Divers The Mares HR Second Stage XR Line delivers exceptional breathing performance and reliability for advanced and technical divers. Designed to handle the most demanding dive environments, it combines adjustable airflow control, VAD technology, and the rugged engineering of the XR Line for smooth, effortless breathing in any condition. Adjustable Breathing Resistance Fine tune your
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