Rotonde de Cartier L’Heure Mystérieuse 42 mm skeletonized watch, Manufacture mechanical movement with manual winding, caliber 9983 MC. 18-karat white gold case set with 28 brilliants (0.26 carats), bezel set with 67 brilliant-cut sapphires, beaded crown set with a diamond with truncated pavilion (0.2 carat), rhodium-plated steel sword-shaped hands . Blue alligator strap, double adjustable folding buckle in 18K white gold set with 43 brilliants (0.43 carats). Mysterious complication with mysterious display of the hour and minute hands, skeletonized bridges in the shape of Roman numerals adorned with 372 brilliants (1.29 carats). Movement with individual numbering, 192 parts and 27 jewels. Diameter 33.6 mm, thickness 6.15 mm, balance wheel at 28,800 vibrations / hour, power reserve of approximately 48 hours. Sapphire crystal and case back. Thickness 11.9 mm. Waterproof up to 30 meters.