Cressi Octopus MG Balanced Second Stage Regulator The Cressi Octopus MG Second Stage Regulator is a pneumatically balanced valve designed with a Venturi effect adjustment switch, Cressi's patented elliptical membrane diaphragm and patented low-friction lever. The Cressi Octopus MG Balanced regulator air delivery system without injector has an internal heat exchange, cam-lock system to open the case and a body in noise-absorbent techno Polymer. Removable techno Polymer deflector and removable mechanical parts Octopus regulator specially designed for the most demanding divers. Its main feature is a pneumatically balanced valve that minimises the breathing effort. The Venturi effect adjuster on the mouthpiece tube increases and decreases the air flow, doing away with the risks associated with free-flow. When scuba diving, breathing is natural and effortless. Thanks to its light weight and ergonomic design, this regulator is very handy and easy to use. The hose is an extremely light and flexible weighing only 153 g (5.4 oz) with the regulator coming in at 182 g (6.42 oz). Regulator is certified to CE standard Annex B EN 250:2014 for cold water. The hose and purge cover are in bright yellow color for easy identification in an out-of-air-emergency.