MODEL: 231.53.42.21.06.001 BOX & CERT DATED 2013, OMEGA SERVICING CERT DATED 2020. Omega Caliber 8500, COSC Chronometer Certified set in 18K rose gold case 41.5mm, fitted with original Croco leather strap with 18K rose gold deployment buckle. Teak-Grey Dial, minute markers around the outer rim. Date display at the 3 o'clock position. Screw down crown. Water-resistant at 150 meters / 500 feet.