36h power reserve18,000 vph (2.5 Hz)
The L902.1 is a manually wound movement made by A. Lange & Söhne. It is assembled from 953 parts. The balance beats at 18,000 semi-oscillations per hour, and the power reserve is 36 hours. A. Lange & Söhne fits it to the Tourbillon. Its displays and mechanisms include power-reserve indicator, tourbillon and fusée-and-chain transmission.
Last updated 11 Oct 2026Suggest a correction
TECHNICAL SPECIFICATIONS
Movement Type
Manual Winding
Power Reserve
36h
Frequency
18,000 vph (2.5 Hz)
Display Type
Analog
COMPLICATIONS
Power Reserve IndicatorTourbillon
QUICK FACTS
FOR WATCH DEALERS
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