18kt yellow gold case. Black hand-sewn full grain alligator strap. Guilloche silvered dial with central rose motif. 18kt yellow gold octagonal crown set with a faceted sapphire. 18kt yellow gold adjustable deployment buckle. Date and sweeping hour complication through apertures. Mechanical movement with manual winding. Scratch resistant sapphire crystal. Transparent caseback. Case dimensions: 23.3mm x 26mm. Case thickness 3.5mm. Water resistant at 30 meters (100 feet). Cartier Tank a Vis Time Calendar Apertures 18kt Yellow Gold Mens Watch W1534451 