This silver-white Nautilus 5740-style replica houses perpetual calendar displays inside a 40mm rose gold tone case, referencing the 5740/1G-001, the only perpetual calendar Patek Philippe has fitted to the Nautilus; the genuine is white gold with a blue dial, so this rose version is a factory variant. Patek’s ultra-thin 240 Q tracks day, date, month, leap year and moon phase without correction until the year 2100, while the clone Cal. 240 Q here drives a layout without a month, each display set with the correctors. In a Nautilus case, that level of complication is remarkable. Our page on the silvery Nautilus dial finish describes how the silver-white surface and the embossing should catch the light.

Specifications

• Model: Nautilus Perpetual Calendar style (factory variant)
• Reference: 5740/1G-001 style (factory variant in rose gold tone)
• Case: rose gold tone (genuine 5740/1G: 18k white gold only)
• Case size: 40 mm
• Dial: silver-white with horizontal embossing
• Sub-dials: day with small 24-hour scale at 9, date ring with leap year at 3, moon phase with numbered ring at 6; no month display
• Bezel: rose gold tone, octagonal
• Functions: hours, minutes, day, date, leap year, moon phase, 24-hour indication
• Movement: clone Cal. 240 Q, automatic
• Power reserve: 44 hours (genuine Cal. 240 Q: 48 hours)
• Water resistance: 30 m (splash-resistant only; not for swimming)
• Crystal: sapphire
• Bracelet: rose gold tone integrated links

Why Patek’s 240 Q Stays Thin

Patek’s genuine 240 Q caliber uses a micro-rotor design rather than a full-size oscillating weight. This architectural choice is what allows Patek Philippe to fit a complete perpetual calendar mechanism into a case thin enough to maintain Nautilus proportions.

Sub-Dial Layout of the Rose 5740 Variant

Perpetual calendars traditionally add significant case thickness, but the 5740/1G-001 avoids that penalty. The 240-series movement platform was designed from the ground up as an ultra-thin architecture, and the Q suffix indicates the calendar module integrated on top. On this dial the day shares the sub-dial at 9 with a small 24-hour scale, the date ring and leap year indicator sit at 3, and the moon phase with its ring is at 6; there is no month display. Explore more options within the Nautilus collection to compare this against simpler references. For a different take on the same 5740 case in a darker palette, the rose gold tone 5740-style brown dial version swaps the silver-white face for chocolate tones while keeping the same layout and case.

Next to the Royal Oak Perpetual Calendar

The 5740 competes directly with Audemars Piguet’s Royal Oak Perpetual Calendar for the title of thinnest luxury sports perpetual calendar. Both use ultra-thin movements inside integrated-bracelet cases, but the Nautilus silhouette gives the 5740 a different visual identity. A silver-white dial on rose gold tone reads dressier than most Nautilus configurations, bridging the gap between sports watch and formal complication piece. This rose gold tone 5740-style replica captures that rare combination for collectors who want the calendar look of the most complicated Nautilus.

Other versions of this model in stock: Patek Philippe Nautilus 5740/1G-001 blue dial, Patek Philippe Nautilus 5740/1G white dial, Patek Philippe Nautilus 5740/1G-001 white dial, Patek Philippe Nautilus 5740 brown dial.