L.U.C Lunar Big Date

18-carat rose gold

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Within its 18-carat rose gold case, the L.U.C Lunar Big Date timepiece exudes a captivating poetry. The moon phase complication of the chronometer-certified movement is so accurate that the difference between the actual lunar cycle and its indication is just one day every 122 years. The grey dial displays a large date at 12 o'clock and... an original view of the moon phases showing both Northern and Southern hemispheres.
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Ref. Number:
161918-5003

Specifications

FUNCTION(S):
stop seconds
INDICATION(S):
hours and minutes, small seconds, date, orbital moon-phase display
CERTIFICATION(S):
Chronometer certificate issued by the COSC
MOVEMENT:
L.U.C 96.20-L
TYPE OF WINDING:
self-winding mechanical movement
MOVEMENT DIMENSIONS:
Ø 33.00 mm
MOVEMENT THICKNESS:
5.25 mm
POWER RESERVE:
65 hours, L.U.C Twin Technology (two stacked barrels)
FREQUENCY:
4 Hz (28,800 vibrations per hour)
OSCILLATING WEIGHT:
22-carat gold
BALANCE WHEEL:
with three spokes
BALANCE SPRING:
flat
DECORATIONS ON MOVEMENT:
bridges adorned with Côtes de Genève, circular-grained mainplate
JEWELS:
33
NUMBER OF MOVEMENT PARTS:
296
MATERIAL:
18-carat rose gold
CASE DIMENSION(S):
Ø 42.00 mm
CASE THICKNESS:
10.90 mm
DIAL:
sunray satin-brushed grey dial with luminescent hands
FRONT GLASS:
glareproofed scratch-resistant sapphire crystal
CASE-BACK:
see-through sapphire crystal
CROWN MATERIAL:
18-carat rose gold
WATER-RESISTANCE:
30 metres
STRAP:
brown alligator leather strap (matt square plate) with hand sewn matching tones
BUCKLE MATERIAL:
18-carat rose gold
BUCKLE TYPE:
folding clasp
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Chopard Watch L.U.C Lunar Big Date 18-carat rose gold

Movement

The chronometer-certified L.U.C Calibre 96.20-L is equipped with an ultra-precise device in which the wheel driving the moon-bearing disc comprises 135 teeth. Its indication is so precise that the difference between the mechanism and the actual lunar cycle amounts to just one day every 122 years.
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