The Legend Glacia™ is the newest member of the Legend family of regulators. It has been designed for use under the most extreme conditions. The Legend Glacia offers a greater resistance to freezing than any regulator Aqua Lung has ever produced. In addition, it boasts a breathing performance that is equivalent to that of a Legend Supreme. Din adapter Option The Legend Glacia is fitted with three heat exchangers: The first completely surrounds the first stage environmental dry chamber The second is fitted to the medium pressure hose itself The third is in the traditional position adjacent to the second stage casing Traditional second stage elastomer front covers harden in very cold water. The Legend Glacia is fitted with an aluminum cover machined from solid metal. The metal cover, apart from assisting the heat exchangers, accommodates a purge button with flow control Auto-Closure Device (ACD) (pat. pend.) seals the regulator's inlet fitting, both yoke & DIN, as soon as regulator is removed from the cylinder valves Comes with a lip shield to keep lips warm X'treme Range!!! Watch the Glacia movie... What is the ACD System? See it in action...