The Check out is beautiful but enormous, using the shape on the CK 2998 Speedmaster and turning it into a 45mm huge and 17.37mm thick beast of a view balanced out by a good looking aventurine dial and bezel and to the Sedna Gold bracelet, the Speedmaster Chrono Chime weighs https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/