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1815 TOURBILLON

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.

Movement L102.1

Number of movement parts

262

Number of diamonds

1

Number of rubies

20

Number of screwed gold chatons

5

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

Progress in precision

Probably the most elaborate horological complication for improving the rate accuracy of a mechanical watch – the tourbillon – was refined by Lange.

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Starting to the second

The patented ZERO-RESET mechanism is a Lange-specific convenience feature that simplifies fast and precise timesetting.

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A tribute to Ferdinand Adolph Lange's heritage

With precision, perfection, courage, and modesty as its attributes, the 1815 watch family pays tribute to the founder of the Lange manufactory.

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