Aqua Lung Calypso Octopus backup keychain

Nitrox compatible to 40% (The recreational limits of Nitrox) spray "adjustable for diver" to prevent unwanted free flow bright "hi viz" yellow accents for easy identification rugged, reliable and affordable 39" Hi-Viz neon yellow hose two options available: quick connect option - allows the second stage to be removed and reattached without tools classic option - offers a traditional hose attachment via swivel nut