This Cartier Santos Dumont Skeleton Ref CRW2020052 is rated 9.8 out of 10. It comes box and warranty booklet dated in September 2013. Santos-Dumont Skeleton watch, XL, Manufacture mechanical movement with manual winding 9612 MC. ADLC-coated titanium case, faceted crown set with a black faceted spinel, dial of Roman numerals formed by the movement bridges, rhodium-finished brass sword-shaped hands. Black alligator-skin strap with double adjustable 18K ADLC-coated white gold folding buckle. Skeleton complication of bridges in the form of Roman numerals. Individually numbered movement comprised of 138 parts including 20 jewels. Movement dimensions: 28.6 mm x 28.6 mm, movement thickness: 3.97 mm, balance: 28,800 vibrations/hour, power reserve approx. 72 hours. Sapphire case back. Case thickness: 9.4 mm. Water-resistant to 3 bar (30 meters/100 feet).