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A. Lange & Söhne Zeitwerk Lumen Honeygold

The Zeitwerk Honeygold “Lumen” is the fifth model in a series of timepieces endowed with semi-transparent dials and luminous displays. Share

The Zeitwerk Honeygold “Lumen” is an incomparable timepiece that features a luminous jumping numerals display and a case made of Lange-exclusive honey gold. The new model proves that A. Lange & Söhne’s product developers keep exploring new avenues. After all, this timepiece not only stands out with its inimitable design but also breaks through the limits of conventional watches with innovative mechanisms.

A. Lange & Söhne Zeitwerk Lumen Honeygold

The Zeitwerk features a jumping numerals display with large, highly legible numerals that, as usual in a digital watch, read from left to right. The ingenious rotary mechanism consists of two discs for the minutes and a large hour ring that covers nearly the entire diameter of the movement.

Apart from the technical concept, the innovative design is revolutionary as well. The curved time bridge is one of the most prominent elements and provides an elegant frame for the time indication. In the Zeitwerk Honeygold “Lumen”, it consists of black rhodiumed German silver that harmoniously complements the dark sapphire-crystal dial.

A. Lange & Söhne Zeitwerk Lumen Honeygold

The Zeitwerk Honeygold “Lumen” is a superior mechanical watch that reveals its second, fascinating face at night. In the darkness, only the numerals in the two display apertures will glow – nothing else. The technical challenge behind this development was to charge the numerals with light energy even though they are beneath the dial most of the time.

A. Lange & Söhne Zeitwerk Lumen Honeygold

The solution: an elaborate special coating of the semi-transparent sapphire-crystal glass. It filters out certain spectra of visible light but lets most of the UV radiation pass through. This is exactly the range that charges the glowing pigments with light energy – to make them glow in the dark. The light permeability in the visible spectrum was reduced to the point where the disc mechanism is only vaguely recognisable during the day so that the clear legibility of the time is not compromised.

A. Lange & Söhne Zeitwerk Lumen Honeygold

Thanks to the jumping numerals, the digital display remains readily legible after each switching cycle. Even at night. Because now, the numeral discs cause the watch to glow – whenever they become visible in the display after every full minute. The fascinating switching cycle is especially easy to observe at night.

A. Lange & Söhne Zeitwerk Lumen Honeygold

The case of the Zeitwerk Honeygold “Lumen” has a diameter von 41.9 millimetres and is crafted from Lange’s exclusive honey gold – a première for a “Lumen” model. This 18-carat gold alloy is especially hard and has an inimitably warm gloss. The hands of the power-reserve indicator and the subsidiary seconds as well as the prong buckle are made of honey gold too. Combined with the dark dial and the dark-brown leather strap, the hue is a real eye-catcher.

World Price: EUR 114,000

Technical Specifications

  • Ref. 142.055
  • Diameter: 41.9 mm, Height: 12.6 mm
  • Material: 18k Honey Gold
  • Crystal: Sapphire
  • Water resistance: 30 m
  • Movement: L043.9
  • Functions: Hours, minutes, seconds, power reserve indicator, and quickset hour corrector
  • Frequency: 18,000 beats per hour (2.5 Hz)
  • Winding: Hand wind
  • Power reserve: 72 hours
  • Strap: Crocodile with pin buckle
  • Limited edition: 200 pieces
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