On land as at sea, this emblematic watch has irresistible seductive power. The Oyster case, today guaranteed waterproof to a depth of 300 metres (1,000 feet), is a paragon of robustness. The characteristically shaped middle case is crafted from a solid block of particularly corrosion-resistant 904L steel. Rolex Submariner is equipped with calibre 3130, a self-winding mechanical movement entirely developed and manufactured by Rolex.