Fifty Fathoms Automatique
N05010O12B030NB52B
Model number: 5010 12B30 B52B. Fifty Fathoms Automatique, automatic, Caliber 1315 with silicon balance spring—delivering a five‑day (120‑hour) power reserve; secure movement mechanism; black sunburst dial with date display; satin‑brushed Grade 23 titanium case, 42.3 mm, 14.3 mm thick; unidirectional sapphire‑topped bezel; water resistance to 30 bar (300 m); sapphire exhibition case‑back; black sail‑canvas strap with folding clasp.