The Rolex Sea-Dweller 4000 reference 116600—affectionately known among horology purists as the "SD4K"—is one of the most celebrated and short-produced modern sports references in Rolex history (manufactured from 2014 to 2017). Combining the classic 40mm case diameter of vintage tool watches with modern Cerachrom ceramic technology, this model is revered for maintaining the traditional flat sapphire crystal without a Cyclops magnifying lens over the 3 o'clock date aperture. The result is an exceptionally balanced, uncluttered dial that remains a grail reference for serious diver watch collectors.
Crafted from solid Oystersteel, the 40mm case features refined lug bevels and an integrated helium escape valve on the 9 o'clock flank. Unique to this reference, the unidirectional black Cerachrom ceramic bezel features individual minute graduations around the entire 60-minute circumference—rather than only for the first 15 minutes as found on the Submariner. The satin matte black dial provides a deep, non-reflective background for applied Chromalight markers that glow vivid blue in darkness.
The timepiece is powered by an automatic self-winding mechanical movement operating at 28,800 vibrations per hour (4Hz). The bidirectional oscillating weight winds smoothly, providing consistent torque and dependable timekeeping. The date complication clicks instantaneously at midnight with rapid quickset adjustment, supported by hacking seconds functionality for precision time setting.
The solid 20mm Oystersteel Oyster bracelet is fitted with solid end links that integrate seamlessly with the case lugs. The Oysterlock safety clasp incorporates the patented Glidelock extension system, allowing quick micro-adjustments in 2mm increments. Every timepiece undergoes comprehensive timegrapher regulation and cosmetic inspection before dispatch, backed by complimentary express delivery and our 2-year warranty.
