https://www.cartier.com/en-us/watche...RWHRO0078.html
Rotonde de Cartier watch, Masse Mystérieuse skeleton, mechanical movement with automatic winding, caliber 9801 MC.
Case in platinum 950/1000, beaded crown in platinum 950/1000 set with a ruby, brass dial with white gold 750/1000 appliqués, sword-shaped hands in polished gray steel, sapphire crystal and case back.
Two straps in black and dark gray alligator leather, deployant buckle in white gold 750/1000.
Movement consisting of 435 parts including 43 rubies.
Movement diameter: 39.6 mm, movement thickness: 7.3 mm, balance: 28,800 vibrations/hour, power reserve approx. 42 hours.
Case diameter: 43.5 mm, thickness: 12,647 mm. Limited edition of 30 individually numbered timepieces. Water-resistant up to 3 bar (approx. 30 meters/100 feet).