An uncompromising tool watch engineered for extreme depth. The Rolex Sea-Dweller Deepsea ref. 116660 features a 44mm Oystersteel case rated to 3,900 meters. Its Ringlock System combines a nitrogen-alloyed steel compression ring with a 5.5 domed sapphire crystal and a Grade 5 titanium caseback, distributing pressure evenly across the case for reliable performance.The black dial, direct and highly legible, is detailed with Chromalight markers emitting a long-lasting blue glow. A black Cerachrom bezel tracks dive time with precision. Within the case, the Caliber 3135 delivers Superlative Chronometer performance, utilizing a Parachrom hairspring for resistance to shock and magnetism.
eBay