Ballon Bleu de Cartier Blue Balloon Watch, 33mm model, automatic winding mechanical movement. Stainless steel case, grooved crown embedded with a convex circular synthetic spinel, silver plated twisted rope engraved pearl dial. Sword shaped blue steel pointer, sapphire crystal mirror, black crocodile leather strap, replaceable stainless steel folding clasp. Thickness: 10.16 millimeters. Waterproof depth of 3 bar (approximately 30 meters).