A. Lange & Sohne Lange 1 Watch, round 18kt yellow gold case (38.5mm diameter, 10mm thickness) with see-through sapphire crystal case back, brown crocodile leather strap with 18kt yellow gold tang buckle, silver dial with gold hands and applied Roman numerals and index hour markers, power reserve indicator at 3 o'clock, sub-seconds dial at 5 o'clock, patented large double-window date calendar at 1 o'clock, 52 jewel #L901.0 Caliber manual-winding mechanical movement with 72 hour power reserve, scratch-resistant sapphire crystal, water-resistant to 30 meters.
The A. Lange & Sohne Lange 1 watch is quite probably the most acclaimed mechanical wristwatch of the new era. The patented outsized date calendar and the extraordinary dial design have elevated it to flagship status: It truly symbolizes A. Lange & Sohne's horological artistry. And it's movement incorporates the rich experience of 200 years of Saxon precision watchmaking prowess. The Lange 1 is a mechanical wristwatch without peer or precedent. It was introduced as the first A. Lange & Sohne watch of the new era and horologically represents a culmination of what aficionados and connoisseurs of fine watches associate with the great "A. Lange & S?hne" heritage. In its heart beats the spiritual legacy of the historic pocket watches built by Lange. With its patented outsized date calendar, however, it also aptly demonstrates how tradition and ingenuity can come together in style. This useful display, like the five-minute digital clock in Dresden's Semper Opera that inspired it, improves the legibility of the date by about three orders of magnitude in comparison with conventional timepieces. The solid-silver dial, with its characteristic off-centre displays, indicates the hours, minutes, and seconds. Depending on the model, the hands are made of gold or blued steel. The up-and-down power reserve scale provides information on the state of wind of the twin mainspring barrels which, when fully wound, offers a power reserve of three days.