The AquaLung Core Octopus is a cold water octopus that is the perfect accompaniment to the Aqua Lung Core Regulator. Lightweight but cold water rated; these regulators are perfect for the diver that likes to travel but also enjoys British diving. Balanced 2nd Stage will deliver a consistent amount of air no matter the depth Heat Exchanger at the second stage end of the hose uses water temperature to warm air as it rushes through the valve; preventing exponential freeflows and freezing valves. Venturi Adjustment can be adjusted during the dive and interrupts a freeflowing second stage by redirecting the airflow toward the diaphragm. Don’t forget to validate your warranty by visiting the Manufacturers Warranty | Registration Page View product manual ABOUT Aqua Lung Aqualung have been industry leaders producing a range of diving equipment from regulators and computers to drysuits, wetsuits and masks. Aqualung have been producing dive equipment since 1943, started by Jacques-Yves Cousteau and Émile Gagnan who introduced the world to scuba diving and the Aqua-Lung.