German made, manually wound, 30.6 mm/5.7 mm, 21,600 vph (3Hz), 368 components, 43 jewels, 8 gold chatons, 72-hour power reserve. Hours, minutes, smalls, stop seconds, power-reserve indicator, jumping outsize date. Plate and bridges made of untreated German silver. Balance cock engraved by hand. Lange in-house balance spring and free sprung balance wheel. Pusher controlled rapid correction outsize date (patented).