72h power reserve21,600 vph (3 Hz)
The L901.2 is a manually wound movement made by A. Lange & Söhne. It is assembled from 365 parts. The balance beats at 21,600 semi-oscillations per hour, and the power reserve is 72 hours. A. Lange & Söhne fits it to the Grand Lange 1. Its displays and mechanisms include outsize date and power-reserve indicator.
Last updated 11 Oct 2026Suggest a correction
TECHNICAL SPECIFICATIONS
Movement Type
Manual Winding
Power Reserve
72h
Frequency
21,600 vph (3 Hz)
Display Type
Analog
COMPLICATIONS
Big DateDatePower Reserve Indicator
QUICK FACTS
FOR WATCH DEALERS
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Watches with this movement
A. Lange & Söhne
Grand Lange 1
115.021
Manual WindingYellow Gold
A. Lange & Söhne
Grand Lange 1
115.022
Manual WindingYellow Gold
A. Lange & Söhne
Grand Lange 1
115.025
Manual WindingPlatinum
A. Lange & Söhne
Grand Lange 1
115.026
Manual WindingPlatinum
A. Lange & Söhne
Grand Lange 1 "Luminous"
115.028
Manual WindingWhite Gold
A. Lange & Söhne
Grand Lange 1 "Luminous"
115.029
Manual WindingWhite Gold
A. Lange & Söhne
Grand Lange 1
115.031
Manual WindingRose Gold
A. Lange & Söhne
Grand Lange 1
115.032
Manual WindingRose Gold