Initially introduced in 2016, crafted in platinum and with a black dial, featuring a flyback chronograph, a perpetual calendar with moon phases, an oversized date and a sixty-second tourbillon perfectly integrated into the back, the Datograph Perpetual Tourbillon ranks among the most complex watches of A. Lange & Söhne, Together with Tourbograph Perpetual Pour le Merite of 2017 and al Triple Splits last year. For the SIHH 2019, this model is back with an unprecedented combination of a white gold case and solid rose gold dial, a new color scheme that has never been used in Lange.

While on the dial side the watch largely displays the same indications and position as the sub-dials, the same moon phase at 6 o'clock and the large date at 12 o'clock, what changes, however, is on the back. . Instead of a traditional regulating organ, Lange integrates a one-minute tourbillon. The obvious reasons for placing the tourbillon on the back is to improve the readability and balance of the display and avoid a hole in the dial. Datagraph. But it is also to reserve some pleasures only for the owner of the watch.

Even with such complexities, the Datograph Perpetual Tourbillon remains relatively compact with its 41,5mm diameter and 14,6mm thickness. The base movement remains that of the Datograph, but has been extensively modified to include a tourbillon, the L952.2m caliber comprises 729 components, including 1 diamond for the tourbillon which beats at 2.5Hz and boasts a 50-hour power reserve.

But, what's new in this 2019 Datograph Perpetual Tourbillon? First, this edition is limited to 100 pieces and is made of white gold, with a brown leather strap and a white gold folding clasp. The real novelty, however, remains the dial, now made of solid rose gold, with a matte, grained surface. This is the first time that Lange has used this color, in tune with the current taste of the salmon dials. A superb, unprecedented combination of colors for this ultra-complex Datograph Perpetual Tourbillon.

THERE. Lange & Söhne Datograph Perpetual Tourbillon with rose gold dial (reference 740.056) will be produced in 100 units, priced at EUR 292.200.