Zeagle Atomic Aquatics ST1 Regulator - REG73 DIN Features SCUBA MAGAZINE TESTER'S CHOICE WINNER "This reg also received the highest score for Ease of Breathing..." Scuba Diving Magazine ATOMIC Quality Exceeds all expectations Made with a combination of stainless steel and titanium Stainless Steel delivers virtually the same corrosion resistance as Titanium at a lower price Stainless Steel does not require protective chrome or nickel plating processes that can be harmful to the environment and is 100% recyclable The ST1 second stage features all-Titanium components as in the T2 and B2 models Environmentally conscious topside...natural breathing at depth The first stage is beautifully machined from a special grade 316 Stainless Steel that is twice the strength of brass with corrosion-resistance approaching Titanium The use of Stainless Steel means we are doing our part for clean air when divers are out of the water The legendary Atomic design means divers also breathe easy at depth First stage machined from solid 316 Stainless Steel Atomic Jet Seat high-flow piston first stage Nitrox ready for mixtures up to 40% Freeze protected factory-sealed first stage also prevents contamination such as silt and sand First stage ports: 2 HP fixed / 5 LP on swivel cap Available in DIN or YOKE All-Titanium second stage construction same as Atomic T2 and B2 models Patented Atomic Seat Saving Orifice (Titanium) Patented Atomic Automatic Flow Control (AFC) All-stainless steel Atomic Comfort Swivel standard A new high-flow second stage case lowers breathing effort at any depth from shallow water to beyond the limits Dual material second stage cover enables entire front to be used for purge Dual silicone comfort fit mouthpiece with tear-resistant bite tabs Wide exhaust deflector to disperse bubbles for enhanced visibility 2 year/300 dive service interval Limited Lifetime Warranty - not contingent on proof of service What our Experts Think Smooth, Reliable Breathing: ST1 2nd stage provides effortless airflow at various depths. Durable Construction: Premium corrosion-resistant materials ensure long-term performance. Balanced Design: Maintains stable performance in changing underwater conditions. DIN Connection: Professional-grade attachment for secure tank connection. Ergonomic Comfort: Contoured mouthpiece designed for extended use. Versatile Use: Ideal for recreational, technical, and advanced diving setups. Q&A Q: What is this product?A: A high-performance 1st and 2nd stage scuba regulator set for safe, reliable underwater breathing. Q: What type of connection does it use?A: DIN connection for standard scuba tanks. Q: Is it suitable for all diving levels?A: Yes, designed for recreational and technical divers. Q: What materials are used?A: Premium corrosion-resistant metals and durable plastics for long-lasting performance. Q: Does it include a 2nd stage regulator?A: Yes, complete set includes 1st and 2nd stages. Q: Is it adjustable?A: Yes, adjustable airflow for comfortable breathing underwater. Q: What color is this model?A: Standard Atomic gray finish (DIN). Maintenance Tips Rinse thoroughly with fresh water after every dive to remove salt, sand, and debris. Dry completely before storage; avoid direct sunlight and high heat. Inspect hoses, mouthpiece, and connections regularly for wear or cracks. Check O-rings and seals periodically; lightly lubricate with silicone grease if needed. Store in a cool, dry place away from heavy pressure or sharp objects. Schedule annual professional servicing to ensure optimal performance and safety.