Rolex Sea-Dweller 43 mm

Rolex Sea-Dweller 43 mm, reference 126600-0002, is a dive watch in steel measuring 43 mm across. The case pairs a unidirectional ceramic bezel with a screw-down crown and a sapphire crystal that carries a Cyclops lens over the date. Inside is the calibre 3235, a self-winding movement with roughly 70 hours of power reserve, certified as a chronometer. The intense black dial shows luminous hands and indices along with a central seconds display and date, and a helium valve on the case supports saturation diving. The steel Oyster bracelet closes with a folding Oysterlock safety clasp fitted with the Glidelock extension system for tool-free adjustment. Rolex rates the case to a depth of 1220 metres, with the helium escape valve there to release gas pressure on ascent.