A Safe Second may not be your first choice for air sup-ply. But the B2 OCTO could be. Since a conventional Octopus is not used as often as a primary, corrosion could set in and degrade performance. The all-Titanium design and components of the Atomic Aquatics B2 OCTO make it more reliable and ready when you need it. The B2 OCTO breathes just like a primary, which makes it the first choice as a Safe Second for most any dive situation.
B2 Octo
A popular Titanium OCTO
US$479.95
An Octopus should breathe easy and not add panic to a panic situation. It should travel light and be ready to perform even though rarely used. It should not be an after-thought. The Atomic Aquatics B2 OCTO is all that and more. A clone of our popular B2 primary Second Stage, the B2 OCTO outperforms most high-end octos from other manufacturers.
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WARNING! This product can expose you to Nickel, which is known to the state of California to cause cancer. Learn more

THE BEST FEATURES OF THE ATOMIC AQUATICS FAMILY
PATENTED COMFORT SWIVEL
Divers also shouldn’t have to worry about turning, twisting or looking over your shoulder. The popular Atomic Comfort Swivel removes that concern by allowing 30° range of motion without hose binding, pulling or kinking. The B2 Comfort Swivel is polished Stainless Steel with black PVD coating. (US Patent No. 7,188,869)
B2 OCTO FEATURES
hover on a hotspot below to explore the features of the B2 Octo
B2 OCTO WITH COMFORT SWIVEL
The B2 OCTO is the most comfortable and easy-to-use Safe Second ever designed with all-Titanium construction for corrosion protection and light weight.
- Patented Brass Atomic Comfort Swivel with Black PVD coating and extra-long 36” hose.
- Patented Atomic Aquatics AFC – Automatic Flow Control with Rapid Adjustment Knob for manual detuning in special situations.
- Patented Atomic Aquatics Titanium Seat Saving Dynamic Orifice prevents wear of the low-pressure seat that extends the service interval and improves reliability.
- Compact with a low profile exhaust deflector that fits easily into pockets.
- Bright Neon Yellow flexible front cover for high visibility.
2-YEAR / 300-DIVE SERVICE INTERVAL
LIMITED LIFETIME WARRANTY
All Atomic Aquatics Safe Seconds feature our exclusive 2-Year / 300 Dive Service Interval and Limited Lifetime Warranty that is not contingent on proof of service.






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Ron Kopec –
Coming from using the Oceanic Delta reg, I will say that the B2 hands down is magnificent for the money. It is the easiest reg I have ever tried. If you don’t like like a claustrophobic feeling when breathing at depth, then buy this now! I am very pleased with it. When I first used it, I felt like I was breathing too much air, but I wasn’t consuming any more than normal. It was just that easy to breathe through. No free flow to deal with or worry about. Pretty much adjusts itself at the surface or at depth. Very happy customer!
Reilly Fallon –
The B2 Octo has been a great addition to my regulator system. Definitely the most balanced and sturdy octo I have ever used. I would definitely trust this system in an emergency situation, and feel confident with this as an addition to my regulator.
sw –
I trust my setup to the T3—but pairing it with the B2 Octo as a backup has been a game-changer. It’s nearly as light and tough as the T3, breathing just as smoothly thanks to the Titanium second stage and Automatic Flow Control. The bright-yellow housing and extra-long 36-inch hose make sharing air effortless, and it feels just as reliable when I need it most. Feels like having a second T3—but smarter for real-world emergencies.