The Atomic B2 is the newest and most sophisticated product of its type, taking the concept to new levels of convenience, reliability and performance as only Atomic Aquatics can deliver. Features of this outstanding Octo include: ATOMIC Quality Exceeds all expectations B2 Second Stage Specs: Patented Atomic Seat Saving Orifice Patented Atomic Automatic Flow Control (AFC) Rapid adjustment knob for manual second stage de-tuning in special situations Polished 316 Stainless Steel Atomic Comfort Swivel 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 32 hose B2 Swivel Octo Specs: The B2 octopus is easily the most comfortable and easy to use safe second ever designed with all-Titanium construction for corrosion protection and light weight The B2 Octo delivers all the patented Atomic features of the B2 primary model, including the Comfort Swivel as standard The Comfort Swivel is the perfect design aspect for a safe second 36" hose 2 year/300 dive service interval Limited Lifetime Warranty - not contingent on proof of service Because you Deserve it! DIVE THE BEST! DIVE ATOMIC! "