First introduced in 1991, the 1735 was the result of six years of research and development. A limited edition of 30 pieces, it combines a perpetual calendar, tourbillon, split seconds chronograph, and minute repeater. With 740 total parts it's among the world's most complicated and prestigious wristwatches. The movement features hand engraving throughout, very fine black polished levers and bridges, and a skeletonized rotor made of platinum. The platinum case measures 42 mm in diameter, with a thickness of 17 mm. Click on the first picture to hear the sound of the minute repeater...