Patek Philippe Nautilus Moon Phase – 40mm Stainless Steel
The Patek Philippe Nautilus Moon Phase (Ref. 5712/1A) is a quintessential expression of the brand’s refined sports-luxury aesthetic, combining iconic design with intricate mechanical sophistication. Housed in a 40mm stainless steel case with a sapphire crystal case back and screw-down crown, this timepiece balances durability and elegance, maintaining the distinct porthole-inspired Nautilus profile.
Its blue dial features a striking sunburst finish with applied hour markers coated in luminescent material, ensuring exceptional readability. The asymmetrical layout highlights the power reserve indicator, date display by hand, moon phase aperture, and small seconds subdial, all powered by the ultra-slim Caliber 240 PS IRM C LU self-winding movement. Offering an approximate 48-hour power reserve, the watch reflects Patek Philippe’s hallmark of technical mastery and precision.
Paired with a stainless steel bracelet, secured by a fold-over clasp, this model delivers comfort and timeless appeal. With water resistance up to 120 meters, it remains both a luxurious and practical companion for any occasion.
Key Features:
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Case: 40mm Stainless Steel
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Case Back: Sapphire Crystal Exhibition Back
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Crown: Screw-Down
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Dial: Blue with Applied Luminous Hour Markers
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Movement: Self-Winding Caliber 240 PS IRM C LU
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Functions: Power Reserve, Date by Hand, Moon Phases, Seconds Subdial
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Power Reserve: Approx. 48 Hours
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Bracelet: Stainless Steel
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Clasp: Fold-Over Clasp
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Water Resistance: 120 Meters
This Nautilus Moon Phase seamlessly merges Patek Philippe’s legendary craftsmanship with modern versatility, making it one of the most distinguished and desirable models in the Nautilus collection.



