I actually looked at one of those, but thought I would look funny, monitoring my readings like that, all day long ... LOL ...
At least with the Apple Watch, I wouldn’t have to look like I just came out of the hospital! ... :-) ...
Like i said.... The CRApple watch will not be accurate as a blood oximeter. Does not have the right contact with the wearer
IOW CRApple watch is a high priced useless toy. Only the Chinese and Japanese are dazzled by this silly thing even though the user manual has not been translated for these chumps