The 250w will be the maximum continuous rating, that's what the regulations say, that how it is with all E-bikes. I don't need to know any of the other stuff, just that it conforms to those regulations, which allow it to be more than adequate.
I'm pretty sure Switzerland has the same regulations as the UK, that is two classes - the one we think of as E-bikes and Speed Pedalecs, the latter requiring registration and treated more like a moped than a bicycle. They're not popular in the UK, though there are a few dealers offering themBTW friend in Switzerland is big into ebike's and looking at there legislation ebike are skill/age limited not power,
https://urbanebikes.com/collections/spe ... /s-pedelec