The compact and lightweight Cressi Zen Octo delivers the same comfortable breathing experience as the Zen 2nd stage, but in high-visibility yellow for quick identification in emergencies. Designed for use in water temperatures above 10°C, the Zen Octo features an adjustable Venturi, which helps reduce free-flows at the surface and underwater. Radial pressure openings evenly distribute water pressure across the diaphragm, further minimizing the risk of free-flows, even in strong currents. The large purge button is easy to locate and operate when needed. Built with a fail-safe downstream design, the Zen Octo continues to deliver air even in the event of a malfunction, providing a reliable backup air source when it matters most. Maintenance is simple and cost-effective, with an ergonomic design that allows for quick disassembly and reassembly without specialized tools, reducing downtime and servicing costs.