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The Zeagle Onyx II Octo is made from a blend of flexible and rigid thermoplastic, elastomeric polymers, and silicone rubber for durability and longevity.
Yes, the Zeagle Onyx II Octo features an anodized aluminum heat sink with an anti-freezing feature, designed to prevent ice build-up in cold water conditions.
The hose that comes with the Zeagle Onyx II Octo measures 36 inches (91.4cm) with 3/8 inch threads.
Yes, the Zeagle Onyx II Octo features adjustable inhalation resistance controls, allowing divers to customize their breathing experience according to their comfort and diving conditions.
The Zeagle Onyx II Octo comes with a distinctive yellow cover, a braided hose, and an owner's manual.
Review Summary
2025-07-08T14:34:14
Works well, easy to use
IVAN W.
Accidents happen. Purchase a protection plan to keep your favorite Scuba.com gear protected from covered accidental damage and failure.
If your equipment stops working, we'll repair it at no additional cost! And if we can't fix it, we'll replace it!
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Browse our FAQ
Yes, Inhalation Effort and Dive/Pre Dive Venturi (Free Flow) Switch
Pneumatically Balanced Downstream Demand Valve
Flexible & Ridged Thermoplastics
Elastomeric Polymers
Silicone Rubber
Zirconium Plated Inlet Tube
O-Rings Buna-N
3/8"
36" (91.4cm)
882689127052
Works well, easy to use
By IVAN W.
Works well, easy to use
Zeagle's Onyx II Octopus Second Stage is lightweight, compact and comfortable, with diver adjustable inhalation resistance controls, free-flow control, and anodized aluminum heat sink built-in anti-freezing feature. Specific design changes have created a regulator that is resistant to free-flow on the surface yet has incredible smoothness and ease of breathing underwater. This pneumatically balance downstream demand valve second stage regulator is manufactured from flexible and ridged thermoplastic, elastomeric, polymer and silicone rubber. The Zeagle's Onyx II Octopus second stage comes with a yellow cover and braided hose for easy identification. The hose measures 36" (91.4cm) with 3/8" threads and comes with an owner's manual.
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