The Aqualung Legend Octopus was built to compliment the Legend range of regulators with a 39" Hi-Vis hose, pneumatically balanced valve & an adjustable Venturi lever to prevent freeflows in the water. Don't forget to validate your warranty by visiting the Manufacturers Warranty Registration Page Specifications Type of second stage: Pneumatically balanced Second stage diameter (cm): 6.57 Controls: Venturi switch Breathing resistance: Preset Mouthpiece: silicone with ergonomic bite wings Front cover: Co-molded w/ limited range to control purge flow rate Exhaust tee redesigned for better bubble dispersion & easier exhalation Heat Exchanger for freezing resistance Hose type 39" yellow braided Aqua Flex hose Nitrox compatible to 40% O2 when new, out of the box View product manual ABOUT Aqua Lung Aqualung have been industry leaders producing a range of diving equipment from regulators & computers to drysuits, wetsuits & masks. Aqualung have been producing dive equipment since 1943, started by Jacques-Yves Cousteau & Émile Gagnan who introduced the world to scuba diving & the Aqua-Lung.