Santos Dumont skeleton watch, extra-large model, Manufacture mechanical movement with manual winding, caliber 9611 MC. 18-karat white gold case, polygonal crown adorned with a faceted sapphire, dial with Roman numerals made up of the movement bridges, sword-shaped hands of blued steel. Strap in black alligator skin, double adjustable folding buckle in 18K white gold. Complication with skeletonized bridges in the shape of Roman numerals. Movement with individual numbering, 138 parts and 20 jewels. Movement dimensions 28.6 mm x 28.6 mm, thickness 3.97 mm, balance wheel at 28,800 vibrations / hour, power reserve of approximately 72 hours. Sapphire crystal case back, 9.4 mm thick. Waterproof up to 3 bar (30 meters).