I bought a Galaxy Watch Active from Amazon Warehouse in the UK labelled as 'Used - Like New'. I found out why it was returned and labelled as 'Used - Like New'.
When I turned it on, it's default language was in Spanish. I checked the serial number and it is a Spanish serial number.🤣🤣
Even though I don't know Spanish, as soon as I connected to my phone via Bluetooth, it automatically synced and the language on watch switched to English.
For a reduction in price, whoever returned it wasn't tech savy enough to realise that syncing with phone changes the language/settings to match your phone settings despite it being a different country version.
So even if you got the wrong country version of the same product, it can still be converted as it just a software.