I can't find anything on the Apple website which tells us what the displays are made of. In previous generations, it was clear the aluminium cases had Ion-X Glass displays while all higher end models had sapphire glass displays. But this info is suspiciously missing this time round. I've seen aluminium Apple Watches do say on the back of them that they have Ion-X displays, so can anyone with a stainless steel AW6 tell us does it say Sapphire Crystal on the back?