The Rolex Deepsea, a titan among dive watches, represents the pinnacle of Rolex's engineering prowess and its unwavering commitment to exploration. Specifically, the reference 116660B, with its iconic "D-Blue" gradient dial, holds a special place in horological history, commemorating James Cameron's record-breaking solo dive to the deepest point in the ocean, the Challenger Deep in the Mariana Trench. This article delves into the intricacies of this remarkable timepiece, exploring its technical specifications, design philosophy, historical significance, and its place within the broader Rolex Deepsea and Sea-Dweller lineage.
The 116660B, often referred to as the "Deepsea D-Blue," is far more than just a dive watch; it's a testament to human ambition and Rolex's ability to create instruments capable of withstanding the most extreme environments. Its robust Oyster case, crafted from Oystersteel, a corrosion-resistant 904L stainless steel alloy, ensures exceptional durability. This material is chosen not only for its strength but also for its resistance to scratches and tarnishing, ensuring the watch maintains its pristine appearance even under harsh conditions. The case's impressive 44mm diameter provides ample space for the watch's complex movement and ensures excellent legibility, even at significant depths.
The watch's unidirectional rotating bezel, a crucial feature for any diver's timekeeping, is fitted with a Cerachrom insert in black ceramic. This innovative material, developed by Rolex, is virtually scratch-proof and resistant to the fading effects of UV radiation, guaranteeing the bezel's markings remain clear and accurate over time. The crisp, precisely engraved numerals and graduations provide a clear and easily readable display, essential for monitoring dive time accurately. The bezel's unidirectional rotation ensures that the diver can only accidentally decrease, never increase, their dive time, a critical safety feature.
The heart of the 116660B is the calibre 3135, a self-winding mechanical movement entirely developed and manufactured by Rolex. This robust and reliable movement is known for its precision, accuracy, and exceptional power reserve of approximately 48 hours. It features a paramagnetic blue Parachrom hairspring, a Rolex-patented innovation that is significantly more resistant to shocks and magnetic fields than traditional hairsprings, ensuring the watch's accuracy remains unaffected by external influences. The movement is also equipped with a high-performance shock absorber and a Microstella regulating screws for precise time adjustment. The meticulous finishing of the movement, visible through the solid caseback, showcases Rolex's dedication to craftsmanship and attention to detail.
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