The Check out is lovely but substantial, taking The form in the CK 2998 Speedmaster and turning it into a 45mm wide and 17.37mm thick beast of the check out well balanced out by a beautiful aventurine dial and bezel and on the Sedna Gold bracelet, the Speedmaster Chrono Chime https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/