Officially Certified Chronometer Chronometre in French Stainless Steel Size: 33mm excluding crown x 39 mm top to bottom of case watch and bracelet will fit 19.5cm wrist 7.8inches Thickness: 10 mm Acrylic Crystal Observatory Logo On back Automatic Chronometer Swiss Omega movement calibre 1011 Stunning Original Silver Omega dial Quickset Date Function This Watch is in excellent condition It is Original and will become a perfect vintage collectible treasure