A:Answer I use the 24hr continuous heart rate function all day and night, every day. I don't use the GPS feature (mostly for runners). I was using the text msg "notification" feature (which only shows your last received text, or the caller ID of whose calling... if your cell is in range), but turned it off, bc it's not very useful in how it's displayed. Disappointing. However, I like that I can go 4 to 5 days between charges (takes about an hour for 100%).