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Inspired by the claim to scientific precision

With a fusée-and-chain transmission and a one-minute tourbillon, this watch incorporates two of the most effective complications that increase rate accuracy. Thanks to the patented stop-seconds mechanism, the tourbillon – and with it the entire movement – can be stopped and set to one-second accuracy. When it is not needed for the reading of the hour, an auxiliary pivoting-dial segment affords a view of the tourbillon. Between 6 and 12 o’clock, it pivots back to complete the hour circle with the numerals VIII, IX and X.

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The three-part regulator dial of the RICHARD LANGE TOURBILLON “Pour le Mérite” was inspired by the Dresden master watchmaker Johann Heinrich Seyffert.

The dial design of the RICHARD LANGE TOURBILLON “Pour le Mérite” was inspired by precision chronometer No. 93 crafted by Johann Heinrich Seyffert, a gifted watchmaker who in the late 18th century established the fundamentals of precision timekeeping in Saxony. Alexander von Humboldt, a natural scientist, expressed particular appreciation for his work and relied on his timepieces to calculate the co-ordinates of his locations during his expeditions and perform many scientific measurements.

The short film shows the RICHARD LANGE TOURBILLON "Pour le Mérite“ and its constructions, which stand for the highest accuracy: the tourbillon with its patented stop-seconds, the pivoting dial segment and the chain-and-snail drive, which is visible through recesses in the three-quarter plate. Lastly, we see the operation of the patented stop-seconds demonstrated.

Movement L072.1

Number of parts


Number of jewels


Number of rubies


Number of chatons


Power reserve

36 hours when fully wound


Frequency: 21600 semi-oscillations per hour

Beat-adjustment system: Screw balance

Movement measures

Diameter: 33.6 mm; height: 7.6 mm

Movement Movement
Movement Movement