Cartier Tank Americaine 18kt Pink Gold Medium Watch W2620030.  18kt rose gold case with a brown (alligator) leather strap. Fixed 18kt rose gold bezel. Silvered flinque dial with blue hands and Roman numeral hour markers. Minute markers around an inner ring.  Cartier calibre 077 automatic movement with a 42-hour power reserve. Scratch resistant sapphire crystal. Octagonal push / pull crown in 18kt rose gold. Solid case back. Rectangle case shape. Case dimensions: 41.6 mm x 22.6 mm. Case thickness: 9.65 mm. Band width: 18 mm. Tang clasp. Water resistant at 30 meters / 100 feet.