The A. Lange & Söhne Datograph Perpetual Tourbillon 'Lumen' Honeygold ref. 740.055FE unites three grand complications including a flyback chronograph with a precisely jumping minute counter, an instantaneously switching perpetual calendar with an outsize date as well as a one-minute tourbillon with stop seconds. The masterpiece also reveals its radiant personality in the dark ‒ thanks to the semi-transparent dial and the luminous coating. Additionally, the case stands out because of the particular hardness and incomparable resplendence of Lange-exclusive honey gold.

At Watches and Wonders 2024, the timepiece combining a flyback chronograph with a precisely jumping minute counter, perpetual calendar with outsize date, and tourbillon with a stop-seconds mechanism will be presented for the first time in Lange-exclusive honey gold and as a ‘Lumen’ version in a limited edition of 50 watches.

First introduced in 2016, the Datograph Perpetual Tourbillon occupies a pre-eminent position in precision watchmaking and in this new version now also exhibits its technical finesse and design assets with a glow in the dark appearance that is unique to A. Lange & Söhne when it comes to mechanical watches filled with the utmost luminosity in the dark.

The first part of its name, Datograph, designates a flyback chronograph with the Lange outsize date. The flyback mechanism allows quick consecutive time measurements because the three switching steps stop, reset to zero and start are executed with one single push of a button. The minute counter assures unambiguous readings of stopped times at any given time: it jumps to the next increment at the precise moment when the chrono seconds hand completes the 60th second.

The new A. Lange & Söhne Datograph Perpetual Tourbillon 'Lumen' Honeygold is powered by the Manufacture Calibre L952.4. This new movement is an evolution from the previous calibre powering the A. Lange & Söhne Datograph Perpetual Tourbillon. The evolved manufacture calibre L952.4 consists of 684 parts and is assembled twice. The classic column-wheel chronograph is equipped with a freely oscillating Lange balance spring as well as a Lange balance wheel with eccentric poising weights, assuring excellent rate stability across the entire power reserve of 50 hours. It is calibrated to a frequency of 18,000 vph, allowing measurements with an accuracy of one fifth of a second.

The Perpetual Calendar complication features instantaneously switching displays. With a view to long-term time measurement, it is based on the Gregorian calendar and takes into account the different duration of the months, including leap-year deviations. The rapid-correction button at 10 o’clock can be used to simultaneously advance all calendar displays by one day. Three correctors on the flank of the case make it possible to separately adjust the moon-phase display, the day of the week, the month and the leap year.

On the wrist, the A. Lange & Söhne Datograph Perpetual Tourbillon 'Lumen' Honeygold wears impressively whether in full brightness or low light conditions. One of the most impressive watches at Watches & Wonders 2024. Available in a limited edition of only 50 watches that will be strictly allocated.

Sticker Price Approximately USD 620,000. For more info on A. Lange & Söhne click here.