Open Box Atomic Aquatics B2 Regulator First StageComfort, Performance, Style, and Unbeatable Value. Introducing the Atomic B2 system, our flagship regulator renowned for its exceptional blend of comfort, performance, and style. This innovative regulator seamlessly combines the hallmark second stage design and materials of the T3 with a first stage crafted from chrome plated brass. The outcome? A remarkably high performing regulator system that caters to divers of all levels and budgets. Earning