Atomic M1 Second Stage
Best high performance regulator for technical and cold water divers.
A high-performance second stage built for extreme conditions and cold water reliability. Its robust construction and automatic flow control make it a top-tier choice for divers who prioritize durability and effortless breathing at any depth.
$479.95
at
Riversidescuba
Who it's for
- Technical divers exploring harsh saltwater environments or using nitrox blends
- Divers seeking a consistent breathing experience without manual adjustment knobs
- Drift divers and DPV users operating in high-flow conditions
Who should skip it
- Budget-conscious recreational divers looking for a basic entry-level setup
- Travelers prioritizing a featherweight gear bag for international flights
- Remote explorers without access to specialized Atomic Aquatics service centers
Performance breakdown
Breathing Resistance
Balanced linear flow ensures effortless inhalation at any depth.
Cold Water Reliability
Thermal heat sink technology prevents freezing in extreme conditions.
Durability
Zirconium-plated brass and titanium construction resists harsh saltwater corrosion.
Maintenance Efficiency
Dynamic orifice design significantly extends the service life of internal components.
Visibility
Super-wide exhaust deflector keeps bubbles clear of your field of view.
Flow Control
Automatic system intuitively manages venturi effects for consistent performance.
Key Specs
Weight
0.86 lbs
Hose Length
32 inches
Material
Zirconium plated brass, Titanium, Silicone rubber
Cold Water Rated
Yes
Adjustable Second Stage
Yes
Regulator Type
Second stage
Intended Use
Cold water diving
Connection Size
3/8 inch
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