Hmm. I know it, and I'm not a professional jewelry dealer. Lots of people know these terms. I have a couple of watches. I find them interesting. Learning about things one finds interesting is fun. I hope you don't see learning, or being knowledgeable, as something odd.
It has been widely reported that the team that made the Apple Watch are big fans of traditional watches. So they went with the terms that everyone who knows about watches already uses (face, crown, complications, bands, etc.), rather than feeling the need to invent new terms. Watches have been around a long time. When the original AirPort came out, WiFi was not well known amongst the general public.