A:AnswerMost definitely not. The only way to check blood pressure is with a blood pressure cuff or an arterial line placement. (like an IV in your artery)
This model doesn't do heart rate or O2 saturation. You would need a higher level product for this.
A:AnswerIt actually has to do with the ph number you used to set it up, just telling you have a message. you can change the settings on the fit bit app. so she wont get notifications.
A:AnswerI’m sure a 4year old might enjoy the neat colors and characters available , but I don’t think they would be keen to the actual step tracking function. I got it for my niece who’s 10 and she tracks her steps everywhere so her age group would be a better fit for this watch.