Cartier Ballon Bleu Large Size Stainless Steel. Large size, 42mm stainless steel case, with stainless steel screw down crown with blue cabachon. Sapphire crystal. Signature Cartier guilloché and silvered dial with Roman numerals and date at 3 o'clock. Automatic winding Cartier calibre 049 movement. Stainless steel bracelet with stainless steel deployant buckle. Water resistant to 30 meters.