Rolex Deepsea Sea-Dweller 136660

About This Watch

The Rolex Deepsea Sea-Dweller 136660 is the latest generation of Rolex's extreme-depth dive watch, maintaining the staggering 3,900-meter (12,800 feet) water resistance rating that makes it one of the most capable mechanical dive watches ever produced. The Ringlock System, consisting of a nitrogen-alloyed steel compression ring, a 5.5mm-thick domed sapphire crystal, and a grade 5 titanium caseback, distributes the extreme pressures of the deep ocean across the entire case architecture. The black dial variant offers a clean, professional appearance with luminescent Chromalight hour markers that glow blue in the dark for up to eight hours. The Cerachrom ceramic bezel insert features platinum-coated minute numerals that are impervious to fading or scratching. The caliber 3235 provides a 70-hour power reserve with superlative chronometer certification. At 44mm and 17.7mm thick, the Deepsea is undeniably substantial, but its wearability has been refined over generations with improved bracelet articulation and the Glidelock extension system. The helium escape valve at 9 o'clock allows safe decompression during saturation diving. This is the watch for those who demand the absolute maximum from a mechanical dive instrument.