Perpetual Calendar

Ergonomic Innovation: The Intuitive All-In-One Crown Correction System

The mechanical epicenter of this advanced timepiece introduces a profound lifestyle engineering breakthrough with the manufacture’s high-performance in-house movement, Calibre 7138, launched in 2025. Comprising 420 individual components and housing 41 jewels, this self-winding mechanism beats at a high frequency of 4 Hz (28,800 vph) and provides a robust 55-hour power reserve, contained within a remarkably thin profile of just 4.1 mm. To dramatically elevate user interaction and streamline the physical case profile, AP’s engineering team rethought the traditional perpetual calendar interface. The result is a highly secure correction system controlled entirely via the crown, making this high complication fully adjustable anywhere without tools and completely avoiding the risk of internal movement damage.

Artisanal Smoked Blue Embossed Dial Architecture & Astronomical Accuracy

The visual profile of the face is defined by a striking smoked blue embossed dial, utilizing a finely textured surface grid that captures and reflects ambient light with immense multi-dimensional beauty. The complex layout is tightly framed by a matching blue inner bezel, pairing seamlessly with tone-on-tone subdials to present highly legible calendar telemetry. The dial cleanly tracks a central week indication, day, date, month, leap year cycle, and an astronomical moon phase display that mimics the true orbit of celestial bodies. For optimal low-light legibility, the hour-markers and hands are custom-shaped from 18-carat white gold and treated with premium luminescent material.

Multi-Planar White Gold Case Geometry & Modern Sport-Luxury Lifestyle

The physical case architecture measures a perfectly balanced 41 mm in diameter and an ultra-thin thickness of just 10.6 mm, providing exceptional ergonomic comfort on the wrist. Forged entirely from premium 18-carat white gold, the multi-piece housing showcases alternating hand-polished bevels and satin-brushed planes. The face is shielded by a double curved glareproofed sapphire crystal that enhances aesthetic depth, while the exhibition sapphire back showcases the hand-finished gold winding rotor. Delivering a contemporary lifestyle finish, the watch is fitted with a blue textured rubber-coated strap with calfskin lining and secured by an 18-carat white gold three-blade AP folding clasp, maintaining a water resistance of 30 m.

TECHNICAL SPECIFICATIONS

1. Movement: In-house ultra-thin self-winding mechanical perpetual calendar caliber (Calibre 7138) with 3 patented innovations.
2. Special Enhancements: Tool-free all-in-one crown adjustments for all perpetual calendar telemetry.
3. Number of Parts: 420 components | Jewels: 41 jewels.
4. Frequency: 4 Hz (28,800 vph).
5. Power Reserve: 55 hours.
6. Movement Dimensions: Total diameter 29.6 mm | Thickness 4.1 mm.
7. Functions: Perpetual calendar with week indication, day, date, astronomical moon phase, month, leap year cycle, central hours, and minutes.
8. Case: 18-carat white gold multi-layered architecture; 41 mm diameter, 10.6 mm thickness.
9. Dial Face: Smoked blue embossed dial, blue inner bezel, tone-on-tone subdials, luminescent 18-carat white gold hands and markers.
10. Glass & Caseback: Anti-reflective double curved glareproofed sapphire crystal and exhibition back.
11. Strap: Integrated blue textured rubber-coated strap with calfskin lining.
12. Buckle Type: 18-carat white gold three-blade AP folding clasp.
13. Water Resistance: 30 m.
14. Status: Active / Available for Order (Brand New).