Rotonde de Cartier Astromystérieux watch, 43.5 mm, Manufacture mechanical movement with manual winding, caliber 9462 MC. 950 ‰ platinum case, platinum bezel set with 60 baguette-cut diamonds (2.36 carats), 950 ‰ platinum pearly crown set with a brilliant-cut diamond (0.14 carats), sunburst guilloché dial, pomme hands. Black alligator skin strap, 18K white gold double adjustable folding buckle set with 37 baguette-cut diamonds (0.85 carats). Astromystérieux complication: Mysterious central tourbillon (consisting of escapement, balance wheel, main gear train and barrel) that makes a complete rotation in one hour. Movement with individual numbering, 408 parts, 188 hands and 25 jewels. Movement diameter 39 mm, thickness 5.9 mm, balance wheel at 21,600 vibrations / hour, power reserve of approximately 50 hours. Sapphire crystal and case back. Case thickness 12 mm. Waterproof up to 30 meters.