It just says "devices". Turns out there's a second section on that chaotic page which mentions "mobile". I did check this before, and it's not mentioned anywhere else, including in the datasheet and specifications PDFs. It's only in one of the "connectivity" section with a vague unclear ambiguous singular "mobile device" mention, which contradicts other parts of the same site.

I don't think they're trying to fool customers on purpose, but it's extremely unclear what exactly you're buying and many sections would lead you to believe that it will work on any Bluetooth-capable device, just like pretty much all Bluetooth devices do. I think this is basically false advertising due to incompetence.