Replica Patek Philippe Nautilus 5726A-001 — 40.5mm Annual Calendar, Moon Phase, 904L Steel
The 5726A-001 packs more complications into the Nautilus case than any other steel reference in the lineup. Annual calendar with day, date, and month displays. Moon phase at 6 o’clock. A 24-hour subdial for AM/PM tracking. Five indications beyond hours and minutes — all in a 40.5 mm sport watch case. The genuine runs caliber 324 S QA LU 24H, one of the most complex movements Patek has fitted into the Nautilus. This replica 5726 is built in 904L steel with the black-gradient dial layout.
Five complications in one sport case — annual calendar, moon phase, and 24-hour display, all legible at a glance through the Nautilus dial.
Caja y esfera
40.5 mm diameter, approximately 11.3 mm thick — larger and thicker than the time-only 5711 to house the calendar module. The dial organization reads cleanly despite the complexity: day-of-week window at 9, month window at 3, pointer-type date around the dial perimeter, moon phase disc at 6, 24-hour indicator sharing the main dial. Black horizontal embossed grooves carry through every zone. White-gold-tone applied markers. Sapphire crystal front and display caseback, AR-coated. 904L case with the standard octagonal bezel — polished bevels, satin flanks.
Pulseras
Integrated 904L steel, same graduating link design as the rest of the Nautilus family. Fold-over deployment clasp. The 40.5 mm case sits slightly larger on the wrist than the 40mm 5711, giving the complex dial better legibility. Alternating brushed and polished link surfaces. Compare to the Colección de complicaciones for similar calendar functions in a dress case.
Movimiento
Automatic, 28,800 vph. The annual calendar requires only one manual date correction per year — March 1st, advancing from February’s short month. Every other month transition (30 and 31 days) is handled automatically. Moon phase disc tracks the 29.5-day lunar cycle. SuperClone tier: ±8 sec/day. Full grade comparison on our Preguntas Frecuentes.
The 5726A-001 is the functional Nautilus — complications that serve a purpose, not decoration. Genuine steel version around $55–70K. This 904L replica delivers every calendar indication and the moon phase display. Full Colección Nautilus | Contáctenos




















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