Cartier Rotonde de Cartier Large Date Second Time-Zone Automatic 18kt Rose Gold Mens Watch W1556220. 18kt rose gold case with a brown (alligator) leather strap. Fixed 18 kt rose gold bezel. White guilloche dial with blue hands and Roman numeral hour markers. Minute markers around an inner ring. Automatic movement. Scratch resistant sapphire crystal. Beaded crown set with a blue sapphire. Skeleton case back. Case diameter: 42 mm. Round case shape. Deployment clasp. Water resistant at 30 meters / 100 feet. Functions: date, second time zone, hour, minute, second. Additional Info: Day/night disc at the 6 o'clock position.