A perpetual calendar, with its union of the practical and the poetic, is the ultimate expression of elegance and sophistication for the modern gentleman. This year Chopard is presenting its celebrated perpetual calendar, the chronometer-certified L.U.C Perpetual Twin, in a stand-out version in 18-carat rose gold that offer gentleman connoisseurs a new expression of artful style and horological finesse.

Case & Dial
Metal	18-carat rose gold
Case Diameter	43
Thickness	11.47 mm
Dial	in a grey colour obtained by galvanic treatment - satin-brushed sunburst finish centred on the date - gold-plated hour markers
Water-Resistant	30 metres
Case-Back	see-through sapphire crystal
Crown Material	18-carat rose gold
Front Glass	glareproofed scratch-resistant sapphire crystal
Movement
Movement	L.U.C 96.22-L
Type of Winding	self-winding mechanical movement
Function	date, hours and minutes, small seconds
Complications	perpetual calendar
Power Reserve	Power Reserve of approximately 65 hours, L.U.C Twin Technology (two stacked barrels)
Certification(s)	Certified chronometer (COSC)
Frequency	4 Hz (28,800 vibrations per hour)
Decoration on Movement	bridges adorned with Côtes de Genève, circular-grained mainplate
Balance Spring	flat
Balance Wheel	with three spokes
Movement Dimensions	Ø 33.00 mm
Movement Thickness	6.00 mm
Number of Movement Parts	300
Jewels	29
Strap & Buckle
Buckle Type	pin buckle
Buckle Material	18-carat rose gold
Strap	brown calfskin (nubuck effect) with hand sewn ecru seam