Dive Watches
ISO 6425, 200m+ water resistance, unidirectional bezels. Submariner, Fifty Fathoms, Sub 300, Black Bay.
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Pilot Watches
B-Uhr fliegers, Type 20 chronographs, Navitimer slide rules. Aviation legibility on the wrist.
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Dress Watches
Calatrava, Tank, Lange 1, Reverso. Thin precious-metal cases for the cuff-and-tie wrist.
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Chronographs
Speedmaster, Daytona, Carrera, Monaco, <a href="/watch-calibers/zenith-el-primero/">El Primero</a>. The most-engineered complication in volume Swiss watchmaking.
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GMT & World Time
Multi-time-zone watches for the long-haul era. GMT-Master, world-time Cottier complications.
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Integrated Sport
Genta-era steel-luxe sports watches. Royal Oak, Nautilus, Overseas, Ingenieur, Laureato.
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Field Watches
Soldiers' watches descended from the WWI trench-watch and WWII A-11 tradition. Hamilton Khaki, Marathon, Sinn 856.
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Skeleton & Openworked
Movements made visible. Royal Oak Skeleton, Hublot Big Bang, Richard Mille, Greubel Forsey architectural openwork.
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Moonphase
The romantic complication. Patek, Lange, JLC moonphases plus De Bethune's 3D spherical moon.
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Tourbillon
Breguet's 1801 patent. The prestige complication of haute horlogerie, Greubel Forsey through industrial Asian.
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Perpetual Calendar
The grand-complication calendar. 1,461-day mechanical program. Patek 1518 heritage, modern Royal Oak Perpetual.
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