A:AnswerThe display will let them track the time, steps, heart rate, distance walked or run and it has an alarm. What teen doesn't need an alarm to remind them when to get up.
A:AnswerNo sir, it doesn't affect your AICD/defibrillator. The fit bit takes you radial pulse. Your AICD/defibrillator will know if your heart goes out of rhythm into a shockable arrhythmia, you might catch it too in your Fit bit. The advantage of the Fit bit is that it will guide you through a healthy exercise routine - steps, calories, and other features. Definitely a cool gadget and I love it.
A:AnswerThe Charge 2 has a larger screen displaying more information. The Charge 2 has a user-replaceable band, whereas the Charge HR's band could not be replaced by the user and when (not if) the band failed the whole thing had to be sent back for repair (if still in warranty). I had a Charge HR for a couple of weeks but returned it for just that reason -- not that the band had failed already but because I had discovered that deficiency. The store's customer service rep. told me that they had had a lot returned "because they fall apart."
A:AnswerNo - your email address identifies a unique individual / account to Fitbit. You can use multiple trackers for the same person (i.e. email address).
It doesn't matter if you're using the app or Fitbit website - one email address = one individual.
A:AnswerYou have to buy the XL and buy the straps separately. I read that on the box. I'm a pretty big dude, most of my watches have maybe 1 or two holes for me to use. This Fitbit has 7 notches left. I wouldn't worry too much about needing it much bigger.
A:AnswerYes. You can choose if you want it to display just the name of the person texting or the name and first line of the text. For caller id, it displays the name.
