Ripcurl Peniche SSS Watch, 316L marine grade stainless steel case & strap, Date & second display subdials, Enamel filled crown, Case diameter: 31 mm, Water-resistant to 100 M, A quality watch from Ripcurl. It is made from 316L marine grade stainless steel, the highest grade of stainless steel for water resistance, strength & non-corrosion in a marine environment. Depth tested 100m.