Rolex Sea-Dweller World Timer Swiss watch companies had to

Swiss watch companies had to prove that what they offered was more unique and desirable than the Japanese imports

robust automatic movement

a worthy counterpart to giants like the Omega Speedmaster or the Rolex Daytona

Not long after the debut of the GMT Master at the Basel World Fair in 1954

colorful and affordable

Rolex Sea-Dweller World Timer Swiss watch companies had toWhy We Love It In 1978, the original Sea Dweller (Reference 1665) was replaced by the Reference 16600. This new model boasted an even greater depth rating: an impressive 4000 feet (or 1220 meters). This was possible, in part, due to a larger Helium Escape Valve. Visually, the 16600 stands apart from its predecessor with a glossy dial featuring applied luminous markers. The internals were also upgraded with the Calibre 3035 movement. Rugged,