Rolex Submariner Watches

"The Rolex Submariner Date watch, incorporating the classical Rolex look suitable for business and social wear is, first and foremost, a diver's watch.  The self-winding movement featuring the Perpetual rotor has been awarded the official title of Swiss Chronometer.  This movement, protected by the world famed Oyster case, also incorporates the Triplock crown, a triple sealing device, which is set between the seamless shoulders of the solid steel or gold case.  A quick change date feature is also incorporated into the mechanism.  The crystal is a synthetic sapphire which offers protection against scratches and scuffs under the most arduous conditions.  The bracelet is especially designed and includes extension links so that the watch may be worn over a light diving suit.  They are stored in the clasp top when not in use.  The fliplock safety clasp helps ensure protection against loss.   And, it is a symbol of the supremacy of the Rolex watch in terms of water-resistance: it is impermeable to a depth of 300 meters/1000 feet.  Meanwhile, the Seadweller is designed to meet the demands of professional divers: it is guaranteed waterproof to a depth of 1220 meters/4000 feet." - Rolex