Rolex Sea-Dweller Deepsea
A very massive diving watch that withstands pressure down to almost four thousand metres.
The Deepsea built on Rolex's attempts to reach the deepest points of the ocean. The blue and black dial came in 2014, after James Cameron's dive into the Mariana Trench.
Materials: Steel, titanium, sapphire crystal; self-winding movement
Manufacture: Made in Geneva; the pressure is taken by an inner ring, the Ringlock.
The very thick case with a domed crystal.
The dial shading from blue to black on some models.