The Atomic Aquatics Z2 Octo delivers high-performance breathing in a rugged, cost-effective design, making it one of the best value alternate air sources in its class. Built as a direct counterpart to the Z2 primary second stage, this octo provides smooth, natural airflow when it matters most, without the compromises of traditional backup regulators.

Constructed with zirconium-plated brass and titanium components, the Z2 Octo offers exceptional durability and corrosion resistance, making it a dependable choice for long-term use in demanding dive environments. Equipped with Atomic’s patented Automatic Flow Control (AFC), the Z2 automatically adjusts airflow based on depth, ensuring consistent, effortless breathing without requiring manual adjustments, especially critical in emergency situations.