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The observation watch for the wrist

With superior rate accuracy and eminent legibility, the RICHARD LANGE continues the tradition of scientific observation watches at A. Lange & Söhne. The solid-silver dial features the slender Roman numerals that were typical for scientific observation watches during Richard Lange’s epoch. In 1868, he was appointed director of the manufactory and advanced precision watchmaking with his insights and inventions.

The RICHARD LANGE White Gold with argenté dial has blued steel hands and allows readings of the time to an accuracy of one-sixth of a second.
The dial of the RICHARD LANGE in pink gold is reduced to the basic elements of hours, minutes and seconds. The hands are made from pink gold and blued steel.

The timepiece owes its precision to a balance spring developed and manufactured in-house that beats at a rate of 21,600 semi-oscillations per hour. The sweep-seconds hand is made of blued steel and contrasts well against the dial. When the crown is pulled, it stops instantly. This allows the watch to be set to one-second accuracy. Readily visible through the sapphire-crystal caseback, the sweep-seconds wheel train is integrated between the three-quarter plate and a separate bridge.


The short film shows the RICHARD LANGE and its precision-enhancing features: the slim blued central seconds hand, the clear dial with slim Roman numerals, the mechanism for the indirect centre-seconds drive and the vibrating off-set balance with the Lange balance-spring. Lastly, we see the correct operation of the watch demonstrated.

部機芯 L041.2

Number of movement parts




Number of screwed gold chatons



38 小時動力儲備(完全上鏈狀態下)

Oscillation system

振頻: 21600 每小時振頻

微調系統: 螺絲擺輪


直徑: 30.6 mm; 厚度 6 mm

部機芯 部機芯