Cartier brand Model (Watch) Ballon Bleu 36mm Reference number W6900456 Automatic winding Case Material Pink gold Strap material Leather Condition Used (Excellent) The item shows slight signs of wear, such as light scratches, but not perceptible to the touch. Full set Calibre Automatic winding Case Case Material Pink gold Diameter 36 mm Waterproof 3 ATM Bezel material Pink gold Glass Sapphire crystal White dial Strap Strap material Leather Buckle Clasp Clasp material Pink gold