Audemars Piguet Royal Oak 15400 Cal.3120 Automatic Steel Watch

The F1 Factory “True Core Edition” Audemars Piguet Royal Oak 15400 is presented as a high-precision interpretation of the iconic “Steel King” design, featuring an integrated Calibre 3120-style automatic movement.

The watch adopts a three-piece case structure consistent with the original architecture, ensuring identical assembly logic, proportions, and structural alignment.

The stainless steel bracelet is crafted using an original-style mold, delivering refined brushing texture and smooth edges that prevent discomfort during wear. The bracelet thickness and articulation closely follow original specifications for enhanced realism and comfort.

A flexible head-link system between the bracelet and case improves wrist adaptation, allowing the watch to sit more naturally on the wrist.

The folding clasp is engineered with consistent mechanical feel and engraved detailing, matching the tactile and visual characteristics of the original design.

The dial is reproduced with high fidelity in both color and texture, maintaining strong visual consistency when compared side by side with the original reference.

At the core, the watch features a fully integrated Cal.3120-style movement rather than a decorated base caliber. Key mechanical characteristics include:

Instant date jump with reverse-direction behavior consistent with original structure

Solid central hand axle design with fully polished hands free of burrs

Fully functional internal gear train with operational components rather than decorative elements

Balance wheel positioned at the 7 o’clock layout, with a 41-hour power reserve

Recreated shock absorption and balance system consistent with original architecture

Optimized rotor color tone tuned to match authentic reference (gold-tone rather than overly red tones seen in many versions)

This F1 Factory edition emphasizes mechanical authenticity, structural integrity, and visual precision, aiming to deliver a highly faithful interpretation of the Royal Oak 15400 aesthetic.

Reproduction is not allowed without permission:Bokey Time » Audemars Piguet Royal Oak 15400 Cal.3120 Automatic Steel Watch

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