Performance, reliability and simplicity • Unfailing reliability over time • Oversized purge button • Ideal for Diving Centers Rover 12 is an excellent choice for intensive use at a Diving Center and for recreational divers who demand reliability. The balanced diaphragm first stage uses the Mares Tri-material valve; the medium-size second stage features a cover made of soft material that makes it easy to push the purge button, even when wearing gloves. The latest technologies offer easy, natural, regular breathing. For simplified maintenance, Rover can also be combined with the R2 piston first stage. R2 is a piston first stage, not equipped with Tri-material valve