WEIGHT: All this Stainless Steel durability weighs just 2.3 pounds (yoke version), making the ST1 an excellent travel companion.

ST1 FIRST STAGE FEATURES: Beautifully machined from a special Atomic grade solid 316 SS. Atomic exclusive balanced Jet Seat high-flow piston. Freeze-protected and factory-sealed to prevent outside contamination from silt and sand. Nitrox ready – approved for non-dedicated EAN use with mixtures up to 40%. Ports: 2 HP fixed / 5 LP on swivel cap

ST1 SECOND STAGE FEATURES: Pneumatically-balanced poppet, high-flow case and lever design for easy breathing at all depths and tank pressures. Patented Atomic AFC – Automatic Flow Control. Soft overmolded Rapid Adjustment Knob for manual detuning in special situations such as surf entries or octo use. Patented Atomic Titanium Seat Saving Dynamic Orifice maintains crisp like-new factory tuning and prevents damage during storage. Hose features patented Stainless Steel Atomic Comfort Swivel with Black PVD coating. Dual material second stage cover enables entire front to be used for purge. Elliptical exhaust valve dramatically reduces exhalation effort at depth. Dual silicone comfort fit mouthpiece with tear-resistant bite tabs – both comfortable and durable. Optional ST1 color kit lets you express your style.

2-YEAR / 300-DIVE SERVICE INTERVAL LIMITED LIFETIME WARRANTY

How long would it take you to dive 300 dives? You don’t even need to think about servicing the ST1 until then. Metal parts are warranted against corrosion for life. Period. The warranty is NOT contingent on proof of service.