Cartier Tank Americaine Rose Gold Automatic Mens Watch W2609856. Automatic self-winding movement. 18K rose gold case 52.0 x 31.1 mm. Circular grained crown set with faceted blue sapphire. Exhibition case back. 18k rose gold fixed bezel. Scratch resistant sapphire crystal. Silvered guiloche dial with black roman numerals. Date calendar window at 6 o'clock aperture. Black leather strap with 18K rose gold deployent buckle.