The soldered wine charms are semi-permanent. They will stay connected indefinitely. Depending on the type of component and what your washing procedures are like, the markings on the charm may fade eventually, or perhaps you just want to change resistor values, or from a capacitor to an inductor. The charms come off, well, like a charm, with a simple snip.
This is part of a DIY "solder your own wine charms" project; read more about it here.