Open Box Atomic Aquatics Z2 RegulatorThe Z Series is our most compact and economical regulator system. But its rare combination of performance, ergonomics and materials is unmatched by competitors at any price. The Z Series gives divers the assurance of the same Limited Lifetime Warranty as all Atomic regulators. AFFORDABILITY WITHOUT SHORTCUTS The Atomic Aquatics Z Series offers a unique combination of performance, ergonomics, features and materials. All in our most cost efficient