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The benchmark in chronograph design

With their cutting-edge technology, combined with the prominence of the dial and the calibre design, the DATOGRAPH models epitomise a separate category of mechanical chronographs. The outsize date and the two subsidiary dials form an equilateral triangle; this endows the face with balanced poise and assures excellent legibility. The DATOGRAPH UP/DOWN has a power reserve of 60 hours; the state of wind is easily readable on the UP/DOWN display.

The complex mechanics of the DATOGRAPH UP/DOWN in platinum include the characteristic outsize date, a tempo switch for the chronograph (flyback) and a patented, precisely jumping minute counter.
The DATOGRAPH UP/DOWN - here in pink gold - displays information such as the power reserve.

The distinctive arrangement of the displays calls for unusually long and slender levers in the movement – plus the in-depth know-how and skills of the designers. This horological opus reveals its particular charm especially when the chronograph mechanism is activated, triggering the ingeniously orchestrated interaction of levers, rockers, and wheels.

DATOGRAPH UP/DOWN – A. Lange & Söhne

Discover the models

2 Models of the DATOGRAPH UP/DOWN

Movement L951.6

Number of movement parts


Number of rubies


Number of screwed gold chatons


Power reserve

60 hours when fully wound

Oscillation system

Frequency: 18000 semi-oscillations per hour

Beat-adjustment system: Screw balance

Movement measures

Diameter: 30.6 mm; height: 7.9 mm

Movement Movement