Learn to repair vintage mechanical watches ... you must completely tear down your watch movement, clean each little part, reassemble and oil it. To learn watch repair read the manual, US ARMY ...

Modern mechanical watches can be incredibly tough, but their many small moving parts can make them fragile. A quartz movement doesn't suffer from this vulnerability, and this is especially the ...

They can cite the differences between ETA and Sellita movements ... Quartz watches also tend to be robust: All of those delicate mechanical parts have essentially been replaced by a battery ...