The A. Lange & Söhne Zeitwerk, unveiled at SIHH in 2009, is one of the most radical mechanical watches of the modern era. While digital displays are commonplace in quartz watches, the Zeitwerk became the first mechanical wristwatch to show jumping hours and jumping minutes through large, side-by-side numeral discs, with no hands for the time. The concept of digitally displayed time finds its roots in the nineteenth-century jumping-hour patents of the Austrian Josef Pallweber, but Lange's achievement was to align hours and minutes horizontally and switch them precisely, instantly, in a single mechanical movement. The design takes its cue from the famous five-minute digital clock in Dresden's Semper Opera House, a heritage that gives the dial its calm, architectural balance. The design won the Aiguille d'Or, the top prize at the 2009 Grand Prix d'Horlogerie de Genève.
The defining challenge of the Zeitwerk is energy. Advancing three discs, the tens-minute disc, the units-minute disc, and the hour ring, demands a strong, perfectly even burst of power exactly on cue. Lange solved this with a patented constant-force escapement that releases energy in precise one-minute intervals, ensuring the displays jump cleanly and the rate stays stable as the mainspring unwinds. The original hand-wound caliber L043.1 ran at 18,000 vibrations per hour with a 36-hour power reserve, framed by a German-silver time bridge that gives the dial its instantly recognizable architecture.
The 2009 launch spanned four metals in a 41.9mm case: platinum (reference 140.025, limited to 200 pieces), white gold (140.029), yellow gold (140.021), and pink gold (140.032). Lange then built a family of complications on this foundation. The Zeitwerk Striking Time of 2011 (reference 145) became the brand's first chiming watch, striking the hours and quarters on visible hammers. The Zeitwerk Minute Repeater of 2015 (reference 147) was the first watch ever to combine a decimal minute repeater with a digital jumping display. The Zeitwerk Decimal Strike of 2017 (Honeygold reference 143.050) chimed automatically on the hour and every ten minutes.
In 2019, for the model's tenth anniversary, Lange introduced the Zeitwerk Date (reference 148.038), launching the second-generation movement: caliber L043.8 doubled the power reserve to 72 hours, added a twin-barrel design, a ring date display, and pushers to set the hour and date independently. This second-generation architecture later underpinned time-only pieces such as the 2021 Zeitwerk Honeygold Lumen (142.055), a semi-transparent tribute to the original 2010 Lumen dial. Collectors prize the Zeitwerk for its intellectual boldness and the way it turns a difficult engineering problem into pure visual theatre.
Bedesten Watches has sold authentic A. Lange & Söhne timepieces in Istanbul since 1999. For collectors searching for a Zeitwerk, visit our Suadiye showroom in Kadıköy or message us on WhatsApp +90 532 327 88 26 for current stock and pricing, with appraisals and purchases handled in TRY, USD or EUR.