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Progress in precision

For over 200 years, the tourbillon has been the paragon of horological precision. Presented by Lange in 2008, the patented stop-seconds mechanism made it possible for the first time to stop the tourbillon at will and accurately set the watch. Now, the 1815 TOURBILLON takes this development a step further: thanks to the ZERO-RESET function, the seconds hand jumps to the zero position when the crown is pulled. This allows the watch to be precisely set and restarted with one-second accuracy.

The 1815 TOURBILLON Pink Gold by A. Lange & Söhne
The special feature of the 1815 TOURBILLON is the complex tourbillon with stop-seconds and a ZERO-RESET mechanism.

For the first time, in the 1815 TOURBILLON, A. Lange & Söhne combined the patented stop-seconds mechanism for the tourbillon with the ZERO-RESET time-setting mechanism. The dial exhibits the typical design elements of the 1815 watch family that recall historic pocket watches: the peripheral railway-track minute scale, Arabic numerals, blued hands and a recessed central segment.

1815 TOURBILLON – A. Lange & Söhne

We begin with fragmented animated sequences, which together show a balance-wheel. They quickly give way to a mystically illuminated real tourbillon in black and white. Display: Precision masterpiece. The Tourbillon. But for over 200 years it was impossible to set the watch precisely. New animated sequences show a rotating tourbillon. An arresting spring comes into play, suddenly snapping home. Display: Until we stopped the tourbillon. In mystical views, the snapping action of the real arresting spring is shown from different perspectives. In the next animated sequence a zero-reset heart cam comes into play, being struck by the zero-reset hammer. Display: 1815 Tourbillon. With a stop-seconds mechanism and a zero-reset function. There follow a composition of aesthetic detail shots of the tourbillon and slow-motion shots of the stop-seconds and zero-reset functions. After several dial perspectives, the watch is presented in all its technical complexity and beauty.

Discover the models

2 Models of the 1815 TOURBILLON

Movement L102.1

Number of movement parts


Number of diamonds


Number of rubies


Number of screwed gold chatons


Power reserve

72 hours when fully wound

Oscillation system

Frequency: 21600 semi-oscillations per hour

Beat-adjustment system: Screw balance

Movement measures

Diameter: 32.6 mm; height: 6.6 mm

Movement Movement
Movement Movement