A couple of patents from the Grandmaster Chime have made their way into the caliber GS 36-750 PS IRM as well. One of them has to do with mechanically isolating the strike train from the going train – usually in replica watches a grand strike watch, they remain mechanically linked even in silent mode, but in the Grandmaster Chime, and now caliber GS 36-750 PS IRM, they are decoupled completely, reducing power consumption and contributing to the 72-hour power reserve. The other is a patent for a single switch for selecting all three strike modes.