The Apeks XL4 Ocea Octopus is a lightweight, high-performance alternate air source, perfectly complementing the XL4 Ocea regulator. Designed for the environmentally conscious diver, it shares the same innovative features as its primary regulator counterpart. You'll find it incredibly easy to purge and breathe from, even in demanding situations, thanks to its balanced valve design. Its compact and lightweight build ensures it won't weigh you down, while its high-visibility yellow front cover and hose make it easily identifiable in an emergency. The XL4 Ocea Octopus offers reliable performance and peace of mind, ensuring you and your buddy are prepared for any eventuality underwater.