DrStrong

Rolex Deep Sea
DrStrong

ROLEX OYSTER PERPETUAL SEA-DWELLER DEEPSEA TECHNICAL FEATURES CASE ARCHITECTURE AND WATERPROOFNESS A watch developed for extreme depths, guaranteed waterproof to 3,900 metres (12,800 feet), the Sea-Dweller DEEPSEA required the design of a case with a unique architecture, the RINGLOCK SYSTEM. This innovation patented by Rolex consists of a combination of three distinctive features: • The high-performance ring Set inside the middle case of the watch between the crystal and the case back, the high-performance nitrogen-alloyed stainless steel ring withstands the pressure exerted by water on the crystal and the case back. The middle case is made from 904L steel. • The sapphire crystal To resist pressure, the synthetic sapphire crystal is slightly ....