Description
The Ref. 15720ST is an architectural celebration of the Maison’s athletic heritage, refined for superior underwater and surface performance. The 42mm case is expertly crafted from satin-brushed stainless steel, featuring the legendary octagonal bezel and high-polish bevels that define the Royal Oak lineage. The vibrant blue dial provides a definitive “pay-off” in legibility and style, featuring the oversized “Méga Tapisserie” pattern and an internal rotating dive scale—finished in white and blue—controlled by the dedicated ceramic crown at 10 o’clock.
The construction is grounded in the Maison’s legendary savoir-faire, featuring the latest self-winding caliber 4308. This “automated revenue system” of precision is a robust movement designed for a high-frequency lifestyle, offering stability and a rapid date-setting mechanism. For the first time in this series, the movement is visible through a glareproofed sapphire caseback, showcasing the darkened 22-carat pink gold oscillating weight and refined hand-finishing on the bridges.
The frame is designed with a “risk-free” focus on versatility, featuring the House’s interchangeable strap system, allowing you to swap between the primary blue rubber strap and the included black rubber alternative without the use of tools. With a professional water resistance of 300 meters, it is prepared for the most demanding environments. Whether navigating elite professional circles in Nairobi or exploring coastal waters, this reference is a definitive investment in the evolution of the luxury tool watch.
Product Details:
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Reference: 15720ST.OO.A027CA.01
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Case Diameter: 42 mm
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Case Material: Stainless steel
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Dial: Blue “Méga Tapisserie” with white gold applied hour-markers
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Movement: Calibre 4308; Self-winding
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Bezel: Internal rotating dive scale; black ceramic crowns
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Strap: Blue rubber with “Interchangeable” system; includes second black strap
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Water Resistance: 300 meters
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Power Reserve: 60 hours
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Features: Glareproofed sapphire crystal and caseback; date display at 3 o’clock
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Savoir-Faire: Hand-finished steel surfaces and specialized nautical architecture

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