Ruby, the name says it all. The regulator with a ruby.Revlutionary technology, unmatched performance, dazzling design : this is a MARES jewel.

First Stage. A modified MR22. The conventional high pressure valve is replaced by a precious ruby.Mares patent. The ruby is perfectly smooth shiny and corrosion resistant; it cannot be etched by oils and fats and suffer no wear.  The seat connector, manufactured with a special high-tenacity technopolymer, guarantees perfect water-tightness; its life cycle is much longer than that of traditional valves and doesn't require special maintenance.  For sports divers, RUBY is forever.