The Atomic Aquatics B2 takes the second stage design and materials that make the T3 famous and pairs them with a more economical chrome-plated brass first stage. You get virtually the same breathing performance and corrosion resistance as the flagship T3, at a price point that works for a much wider range of divers. The B2 has picked up more awards from independent reviewers than any other regulator on the market, and it's easy to see why once you've breathed off one. The patented Atomic AFC (Automatic Flow Control) does the job you'd otherwise be doing manually — compensating for the Venturi effect as you go deeper — so your breathing stays smooth and natural without fiddling with dials or buttons. A Rapid Adjustment Knob is still there if you want manual control for surf entries or when running an octo. The all-titanium second stage carries over the same pneumatically-balanced poppet, elliptical exhaust valve, and Comfort Swivel hose fitting as the T3, so shoulder and jaw fatigue on longer dives is a non-issue. At 2.5 lbs (yoke version), it's only 9 ounces heavier than the T3 — a small trade-off for a first stage that's easier on the wallet. Features: Chrome-plated brass first stage — delivers near-identical performance to the titanium T3 at a more accessible price point. Balanced Jet Seat piston design — sealed against silt and sand contamination for consistent performance in the water column. Patented Automatic Flow Control (AFC) — automatically compensates for Venturi effect as you descend, so breathing stays effortless without manual adjustment. Rapid Adjustment Knob — soft overmolded knob for manual detuning when you need it, such as surf entries or octo sharing. All-titanium second stage — same construction as the T3 for lightweight durability and corrosion resistance. Comfort Swivel hose fitting — polished stainless steel with black PVD coating, allowing 30° of rotation to stop hose binding, pulling, or kinking. Titanium Seat Saving Dynamic Orifice — patented design that maintains factory-fresh tuning and protects the seat during storage. Elliptical exhaust valve — cuts exhalation effort noticeably at depth, where it matters most. Dual-material second stage cover — the entire front doubles as a purge button, so there's no hunting for the right spot. Dual silicone comfort mouthpiece — tear-resistant bite tabs for comfort on long dives without sacrificing durability. Nitrox ready — approved for non-dedicated EAN use with mixtures up to 40% without additional servicing. Optional colour kit available — personalise the look without affecting performance. VIDEO CONSULTATIONS NOW AVAILABLE: We're bringing our highly experienced and knowledgeable staff to you with live-streaming consultations. If you need help choosing the right bit of kit or the best size before buying or even advice on whether a purchased item is the right fit for you, then book yourself a consultation appointment.
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