Rolex Deepsea 44 mm

Rolex Deepsea 44 mm, reference 136660-0006, is a dive watch built from steel with a 44 mm case. The case measures 17.7 mm thick and carries a black ceramic bezel with a unidirectional 60-minute scale. A domed, scratch-resistant sapphire crystal covers the intense black dial, which uses luminous hands and indices for legibility. Inside is the calibre 3235, a self-winding chronometer movement with a 70-hour power reserve. The watch has a date function and a helium valve for saturation diving, along with a screw-down crown. It comes on a steel Oyster bracelet fitted with a folding Oysterlock clasp and Glidelock extension. Rolex rates the case to a depth of 3900 metres.