Atomic Aquatics B2x Sealed, Regulator SetAtomic Aquatics B2x Smooth, consistent breathing in diverse conditions Choose dependable performance with the Atomic Aquatics B2x Sealed regulator. A balanced, environmentally sealed first stage helps keep out cold, silt, and contaminants, while the refined second stage delivers natural airflow from the first breath to the safety stop. A great match for boat charters, shore dives, and travel with Aquatic Sports. Sealed first stage Environmental