I've read the instructions and read them over and over again. It sets the date, time, and your personal info, but none of the things I bought it for really work, like calories burned, heart rate, exercise timer (calorie counting), really stinks because that's what it's for. That's basically what I bought it for. I have a clock that shows the time and date. That's what I get for not spending as much as last time, this was great (different brand) but I just wore it out after 2 and a half years.
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