Circa 2000 Cartier Tank American ( Americaine ) Reference 1730 2 Register Chronograph Wrist Watch, 35 X 26 M.M. 18k Yellow Gold 2 piece water resistant case with 3 rows of fine white Round Brilliant cut Diamonds totaling 2 carats. Quartz movement, Silver Engine turned Dial with 2 Chronograph Dials, Calendar Dial and a sweep seconds hand. Original Cartier Brown croco grain strap with Cartier 18k Deployment buckle. Current wrist size is 6 3/4 inches and can be adjusted up to another 1 inch. recently serviced and comes with a one year warranty.