Marine wristwatch. Self-winding movement with date. Balance spring, lever and escape wheel in silicon. Sapphire caseback. Water-resistant to 5 bar (50m). Diameter: 33.8mm. Available in steel with bezel set with 50 diamonds, approx. 1.16ct, sunburst blue or silvered dial set with 8 diamonds, approx. 0.09ct, gold oscillating weight, hand-engraved on a rose engine, steel bracelet. Available in steel with bezel set with 60 diamonds, approx. 0.84ct, natural mother-of-pearl dial or blue handcrafted lacquered dial, gold oscillating weight decorated with mother-of-pearl, hand-engraved on a rose engine, leather or rubber strap. Available in 18-carat rose gold or white gold with bezel set with 50 diamonds, approx. 1.16ct, natural mother-of-pearl dial, hand-engraved on a rose engine with "marea" motif, gold oscillating weight decorated with mother-of-pearl, hand-engraved on a rose engine, and set with 31 diamonds, approx. 0.09ct, leather or rubber strap. CASE Metal: Steel Skeleton: No Case Width: 33.80 Case Thickness: 9.89 mm Water-resistant: 50 m MOVEMENT Caliber: 591A Winding: Self-winding Power reserve: 38 Lines: 11.5 Jewels: 25 Frequency: 4 Balance-wheel: Breguet Escapement: Swiss straight-line lever / Silicon Balance-spring: flat, silicon Oscillating weight: 18 Carats Number of components: 188/219 REF: 9518ST/YD/S80/D001