First stage body material: forged brass with sand-blasted chrome finish. First stage characteristics: high-performance balanced diaphragm design, maximum safety, and easy to overhaul (option to adjust intermediate pressure from the outside). Second stage material: technopolymers and elastomers, with metal components and cover manufactured with corrosion- and scratch-resistant Luxury Technology treatment. Second stage characteristics: option to regulate both breathing effort and the Venturi Effect. HP ports: 2. LP ports: 4, of which 2 angled at 20° and 2 angled at 30°. Other features: There are no holes on the front cover, which prevents free flow even when facing strong currents.