Cartier Santos Dumont Chronograph Extra-Large Silver Stainless Steel Watch W2SA0008. Chronograph mechanical movement with automatic winding, caliber 1904 CH MC. 44.9 mm stainless steel case, yellow gold 750/1000 bezel, sapphire crystal. Steel bracelet with “SmartLink” adjustment system. Second strap in rubber, with steel folding buckle. Both bracelets are fitted with the “QuickSwitch” interchangeability system. Water-resistant up to 10 bar (approx. 100 meters).