HERITAGE ULTRA‑CHRON CARBON | 43 mm | AutomaticSelf winding mechanical movement beating at 36'000 vibrations per hour, with a monocrystalline silicon balance spring power reserve up to 52 hours. Screw in crown, Water resistant to 30 bar, Scratch resistant sapphire crystal, with several layers of anti reflective coating on both sides. Anthracite dial, Swiss Super LumiNova. Nylon strap bracelet, With titanium buckle. In 1968, LONGINES launched the Ultra Chron Diver, the first dive watch equipped
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