Thirdly reactivity: unlike a ferrous metal part, components made of silicon cannot corrode and are less affected by changes in temperature.
Lastly magnetism: Arguably the most important to the wearer of the watch. We are surrounded by magnetic energy – the invisible flux emitted by kitchen appliances, entertainment systems, microwaves and induction cookers, washing machines and dishwashers, e- bikes and scooters, electric cars – the list will keep growing. The distortions caused by gravity have been largely eliminated from mechanical watches thanks to tourbillions and the move from pockets to wrists. But life without magnets is an impossibility. Every one of them can influence the accuracy of a mechanical timepiece.