The Argonautic Coral limited edition shares the outstanding features of the Argonautic series, making it a professional instrument underwater and stylish companion above water. The 30ATM water-resistant case with screw-down crown and helium valve is equipped with an anti-reflective, scratch-resistant sapphire crystal. SuperLumiNova® BGW9 luminous material allows hands, numerals and the luminous dot on the bezel to shine even in low visibility conditions. DAVOSA's high-performance material, BEYOND STEEL®, has super-class material properties. It is as heavy as gold (density 19.3 g/cm³), is as hard as diamond and withstands the highest heat (melting point is 3,422 °C). BEYOND STEEL® is practically indestructible, absolutely resistant to chemical influences and free of rust and nickel. With a hardness four times that of titanium and twice that of steel, with BEYOND STEEL® we have created the optimum material for the bezel inlays of the new DAVOSA Argonautic series. The dials of the profes