The Cosmograph Daytona. The ultimate racing watch. With its tachymetric scale for reading average speeds up to 400 units per hour. Bright black and steel dial with contrasting chronograph counters. And Oyster bracelet with Oysterlock safety clasp built to remain secure, lap after lap. 40mm, 18ct white gold, calibre 4131. #Rolex #CosmographDaytona #101031