Rolex Oyster Perpetual Sea-Dweller 126603. 43mm steel and yellow gold case. This watch is water resistant to ,220 meters 4,000 feet. Automatic chronometer movement calibre 3235 entirely developed and manufactured by Rolex. Approximate power reserve of 70 hours. Featuring a black dial with Chromalight display with long-lasting blue luminescent hour markers. ‘SEA-DWELLER’ in gold writing. 60-minute graduated, unidirectional rotatable ceramic bezel. Steel and yellow gold Oyster bracelet with double extension system allows adjustments to be made without the use of tools, so that the watch can be worn comfortably over a diving suit. Box and papers dated August 2020.