Blancpain Fifty Fathoms Date Watch 5015-3630-52 : Blancpain Fifty Fathoms Date watch, round 18kt red gold antimagnetic case (45mm diameter, 15.5mm thick), black fabric strap, black unidirectional bezel with white markers, black dial with white Arabic numerals and hands, date indication between 4 and 5 o'clock, 35 jewel Calibre #1315 self-winding automatic mechanical movement, scratch resistant sapphire crystal, 120 hour power reserve, water resistant to 300 meters. This slender movement requires absolutely flawless construction and all the skill of the master watchmaker who assembles and polishes it with painstaking care. Cased in gold, platinum or steel ? individually numbered and signed ? only a few hundred ultra-slim watches leave Blancpain?s workshops every year, to be handed down as precious heirlooms from one generation to another.