The Observe is attractive but huge, taking The form from the CK 2998 Speedmaster and turning it into a 45mm large and 17.37mm thick beast of a watch well balanced out by an attractive aventurine dial and bezel and to the Sedna Gold bracelet, the Speedmaster Chrono Chime weighs a https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/