47 jewels50h power reserve21,600 vph (3 Hz)
The Jaeger-LeCoultre 391 is a manual winding caliber with an analog display, 47 jewels, a power reserve of 50 hours and a frequency of 21,600 vph (3 Hz). It measures 33.7 mm in diameter and 8.24 mm in height. Its complications are chronograph, moon phase and power reserve indicator. It is in production. It is an in-house caliber of Jaeger-LeCoultre.
Last updated 13 Oct 2026Suggest a correction
TECHNICAL SPECIFICATIONS
Movement Type
Manual Winding
Jewel Count
47 jewels
Power Reserve
50h
Frequency
21,600 vph (3 Hz)
Diameter
33.7mm
Height
8.24mm
Display Type
Analog
COMPLICATIONS
ChronographMoon PhasePower Reserve Indicator
QUICK FACTS
FOR WATCH DEALERS
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