The limited edition A Lange& Sohne watch is a special watch that can be stopped and and then set with one-second accuracy. It is limited to 100 pieces only. The white enamel dial looks understated and is a special variation of 1815 Tourbillon that is a stunning work of craftsmanship with modern micro mechanics. You can admire the mechanical precision of the lavishly finished manufacture calibre L102.1 through the sapphire-crystal caseback. The exquisite movement decoration is crowned by a diamond end stone in a screwed gold chaton on the fourth-wheel bridge, which is adorned with a freehand engraving. About30 manual processes are required to craft each dial of the watch.