It is very stable and good quality. The mobile phone sits very firmly indeed!!! But does not break anything

The dealer Jacob (DE) doesn't care if you think the price of Fr 67.75 is too high. You can get it cheaper at Digitec itself for Fr 24.10 Elgato Multi Mount (bracket) And if you are confused now https://helpcenter.digitec.ch/hc/de/articles/360012370979-Angebote-von-Drittanbietern Both offers have something in common, however, that they are not available.

Since this holder is primarily intended for smartphones, I think that your LaMetric is too "thick" for it to be firmly held in this holder. Here as an example: https://www.elgato.com/de/phone-grip you can see the depth of the holder.