Rolex Sea-Dweller Deepsea 116660 | Blue Dial | Ringlock System | 3900m

Built to Conquer the Abyss

Rolex’s Sea-Dweller Deepsea 116660 is a masterclass in extreme engineering—conceived to thrive where human limits end. Its revolutionary Ringlock System and staggering 3,900m depth rating embody Rolex’s relentless pursuit of capability, transforming oceanic pressure from threat to triumph.

The Architecture of Immense Pressure Resistance

• Reference Number: 116660
• The Ringlock System: A proprietary, multi-component case architecture that allows the crystal, central ring, and caseback to bear immense loads at depth.
• Depth Rating: 3,900m / 12,800ft—tested in hyperbaric conditions to exceed real-world demands.
• Domed Sapphire Crystal: Ultra-thick, high-domed sapphire engineered to resist deformation under crushing pressure.
• Helium Escape Valve: Automatic pressure release during decompression to protect the movement.
• Titanium Caseback: Grade 5 titanium alloy for exceptional strength-to-weight and resilience.
• Case and Diameter: 44mm Oystersteel (stainless steel) case—rigid, corrosion-resistant, and unapologetically robust.
• Dial: D-Blue gradient dial (blue to black) with Chromalight lume for enduring legibility in darkness.
• Movement: Rolex Calibre 3135 automatic, COSC-certified, with Parachrom hairspring and approx. 48-hour power reserve.
• Bracelet & Clasp: Oyster bracelet with Glidelock and Fliplock extensions for rapid, tool-free sizing over a wetsuit.

The Curator’s Insight:

This is capability far beyond any human requirement—a wearable pressure vessel that showcases Rolex’s obsession with margins of safety. The Deepsea isn’t merely water-resistant; it’s a declaration of what modern watchmaking can achieve.

Over-Engineered for Absolute Peace of Mind

From its titanium back to its domed sapphire and fortress-like Ringlock core, every element of the Deepsea is optimized to survive the most hostile environments on Earth. It is a technical statement as much as a timekeeper—confident, uncompromising, and built without shortcuts. When you choose the Deepsea, you’re selecting Rolex’s most formidable expression of the professional tool watch.

This Watch is Ideal For…

• The collector who values cutting-edge engineering and uncompromising capability.
• Those who want a timepiece designed to withstand conditions few will ever encounter—yet wears its strength with purpose.
• Admirers of the iconic D-Blue dial and the deep-sea feats it commemorates.