The Check out is magnificent but substantial, using the shape on the CK 2998 Speedmaster and turning it into a 45mm wide and 17.37mm thick beast of a check out balanced out by a wonderful aventurine dial and bezel and over the Sedna Gold bracelet, the Speedmaster Chrono Chime weighs https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/