A. Lange & Söhne Zeitwerk

A sketch, an opera house and five years of work

The Zeitwerk began with Günter Blümlein, the strategist who had revived A. Lange & Söhne with Walter Lange in 1990. In 2001 he made a sketch for a watch with a digital time display. It even included a moon phase. Blümlein died in October 2001, at 58, before anything came of it.

Work on the movement started in 2004, the same year Anthony de Haas joined Lange as its director of product development. He and his team took their visual cue from a Dresden landmark: the five-minute clock above the stage of the Semper Opera House, which shows the time in numerals rather than with hands. That clock was made by Johann Christian Friedrich Gutkaes, who was the father-in-law of the company's founder, Ferdinand Adolph Lange. The same clock had already inspired the outsize date of the Lange 1.

After five years of development and several rounds of dial designs, Lange introduced the Zeitwerk in Berlin in May 2009. Rather than starting with one version, it launched four at once: yellow gold (140.021), white gold (140.029), pink gold (140.032) and a 200-piece platinum edition (140.025). That year the Zeitwerk won the Aiguille d'Or, the top prize at the Grand Prix d'Horlogerie de Genève.

Why a digital mechanical watch is so hard

A digital display in a mechanical watch has a basic problem. Once a minute, the movement must turn the minute disc, and every ten minutes and every hour it must turn two or three discs at once. Those discs are heavy compared with a pair of hands, and if the gear train fed them directly, the watch would lose torque and precision every time the numbers jumped.

Lange's answer was a constant-force mechanism, or remontoir, adapted from the one it had already used in the Lange 31, a watch with a 31-day power reserve. A secondary spring between the mainspring and the escapement is wound up and releases its energy once a minute, delivering exactly what is needed to jump the hour and minute discs while keeping a steady flow of power to the balance. The mechanism is patented.

The result is the caliber L043.1, a manual-wind movement of 388 parts beating at 18,000 semi-oscillations per hour, with a small seconds dial and a power reserve indicator, and 36 hours of running time. On the dial, a German silver 'time bridge,' left untreated on the yellow and pink gold models and rhodium-plated on white gold and platinum, frames the hour and minute windows. No other mechanical watch displays the time both digitally and horizontally in quite this way.

2009

The Zeitwerk arrived in a year that saw Barack Obama's inauguration and the first block of the Bitcoin blockchain. An expensive, unconventional mechanical digital watch was always going to appeal to a limited audience of devoted collectors.

It also arrived as Lange marked 15 years since its rebirth. In a catalog built on traditional Saxon watchmaking, the Zeitwerk was, and still is, the most unconventional model, landing exactly halfway between the 1994 relaunch and the brand's 30th anniversary.

From one watch to seventeen references

The Zeitwerk family grew quickly. A Lumen edition in platinum, ref. 140.035, with a semi-transparent dial that lets the luminous numerals glow at all hours, was announced six months after launch and shown in January 2010. The Striking Time, an hour and quarter-hour striker, followed in 2011; the Handwerkskunst, with a hand-engraved dial and the historic Glashütte lever escapement, in 2012; a decimal Minute Repeater in 2015; the Decimal Strike in 2017; and the Zeitwerk Date in 2019. By 2024 there were 17 references.

The pink gold 140.032 stayed in regular production until 2022, when Lange discontinued it with the white gold model and replaced the time-only Zeitwerk with a second generation. The new movement doubled the power reserve to 72 hours and added a pusher near four o'clock to advance the hour display quickly. The yellow gold 140.021 had been discontinued earlier, in 2013.

The Zeitwerk has always been made in small numbers. It is one of Lange's most labor-intensive watches, and that has kept even the regular-production models scarce on the market.

At auction and on the market

Pink gold 140.032s appear at auction from time to time. In November 2019 one sold in Geneva for CHF 47,500. The rare editions bring far more: a platinum Lumen 140.035 sold in Geneva in November 2016 for CHF 118,750, and a pink gold Striking Time 145.032 sold in New York in December 2021 for $113,400.

In early October 2026 a dealer was asking $89,995 for a full-set 140.032 in pink gold. The only known unique Zeitwerk, a white gold ref. 140.049 with a soft grey dial, was sold at a charity gala dinner in Singapore in 2011 for about SGD 138,000, with all proceeds going to charity.

The numbers

Reference

140.032, 18k pink gold, argenté dial

Caliber

L043.1, manual wind, 388 parts

Frequency

18,000 semi-oscillations per hour (2.5 Hz)

Power reserve

36 hours

Case

41.9 mm x 12.6 mm

Production

2009 to 2022

Timeline

1. Dec 7, 1990

   Walter Lange and Günter Blümlein refound A. Lange & Söhne.

2. 2001

   Blümlein sketches a digital-display watch; he dies in October.

3. 2004

   Development of the Zeitwerk movement begins as Anthony de Haas joins Lange.

4. May 2009

   The Zeitwerk is introduced in Berlin in four versions, including pink gold ref. 140.032.

5. 2009

   The Zeitwerk wins the Aiguille d'Or at the Grand Prix d'Horlogerie de Genève.

6. Jan 2010

   The platinum Zeitwerk Lumen is shown publicly in Geneva.

7. 2011

   The Zeitwerk Striking Time is released; a unique white gold piece is sold for charity in Singapore.

8. 2012

   The Zeitwerk Handwerkskunst arrives with a Glashütte lever escapement.

9. 2013

   The yellow gold 140.021 is discontinued.

10. 2015

    The Zeitwerk Minute Repeater, a decimal repeater, is introduced.

11. 2019

    The Zeitwerk Date debuts the second-generation movement.

12. Nov 2019

    A pink gold 140.032 sells in Geneva for CHF 47,500.

13. 2022

    The pink gold 140.032 is discontinued and replaced by the 72-hour second generation.

The world in 2009

• Jan 3, 2009

  The Bitcoin genesis block is created.

• Jan 15, 2009

  US Airways Flight 1549 lands on the Hudson River.

• Jan 20, 2009

  Barack Obama is sworn in as the 44th U.S. president.

• Feb 7, 2009

  Black Saturday bushfires kill 173 people in Victoria, Australia.

• Apr 6, 2009

  An earthquake strikes near L'Aquila, Italy.

• Jun 25, 2009

  Michael Jackson dies.

Price record

This is an asking price, not a sale. It is what a seller wanted on the date shown. Asking prices often sit above what buyers pay, but an ask is not a ceiling: a sale can land on either side of it. It is not a value.

By reference price, A. Lange & Söhne Zeitwerk is number 33 of 100 in the watches entries of the FLOAT 100. 54 of those 100 rest on a realized sale; the rest carry an asking price or a guide value, and each page says which. Rank within the FLOAT 100 itself (71 here) is editorial: how much an object defines its field, not price alone.

Did you know

• The Semper Opera clock that inspired the Zeitwerk was made by the founder Ferdinand Adolph Lange's father-in-law.
• Günter Blümlein's original 2001 sketch included a moon phase.
• The Zeitwerk's remontoir was adapted from the Lange 31, a watch that runs for a month.
• The Zeitwerk won the Aiguille d'Or in its launch year.
• Lange launched the Zeitwerk in four metals at once instead of one.
• The Handwerkskunst model revived the Glashütte lever escapement with help from a retired former employee.