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MOVEMENT
Jaeger-LeCoultre Calibre 381.
Important note regarding the power re-
serves of the Calibre 381 Dual-Wing.
The Dual-Wing movement of the Duo-
mètre Quantième Lunaire watch model
features two barrels. The first barrel pro-
vides the watch's regulator (regulating or-
gan) with 50 hours of power reserve. The
second barrel, which is independent from
the first, provides all the watch's functions
with 50 hours of power reserve. The func-
tions, thus, do not cause any loss of ener-
gy or isochronism in the escapement.
The regulator's power reserve is indicated
by the blue triangle positioned between
7 and 8 o'clock. The functions' power re-
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