A. Lange and Söhne Datograph 140.048

The A. Lange & Söhne Zeitwerk Honey Gold "Lumen" reference 140.048 is a distinctive variant within the Zeitwerk collection, known for its digital display of jumping hours and minutes. This particular reference stands out due to its use of Honey Gold for the case and its "Lumen" designation, indicating a semi-transparent sapphire dial that allows for the charging and visibility of the luminous material on the display discs, even in daylight. It represents a technical and aesthetic evolution within the Zeitwerk series, offering enhanced legibility in varying light conditions. This model was introduced as a limited edition, further distinguishing it from standard production Zeitwerk pieces. It continues the brand's tradition of combining innovative displays with high-end horological finishing. The watch features a 41.9 mm Honey Gold case with a thickness of 12.6 mm, housing the manual-wind caliber L043.1. This movement provides a power reserve of 36 hours. The semi-transparent sapphire crystal protects the dial, which allows the luminous digital display to be seen. The case is water-resistant to 30 meters. The use of Honey Gold, a proprietary alloy, contributes to the watch's unique aesthetic and durability, setting it apart from other precious metal Zeitwerk models. The movement is visible through a sapphire caseback, showcasing the intricate finishing typical of the brand. For collectors, the Zeitwerk Honey Gold "Lumen" is significant due to its limited production and the technical innovation of its luminous digital display. It appeals to those who appreciate both mechanical ingenuity and distinctive design elements. The "Lumen" series, in general, holds a special place within the brand's offerings, often being among the most sought-after references. This particular reference fits into the broader context of digital display watches, drawing comparisons to historical pocket watches with similar indications and contemporary high-horology pieces that explore alternative time-telling methods.