SUUNTO t4d - Manual (Page 15)

4. Repeat steps 2 and 3 as needed.
5. Press [Start Stop] to exit.
TIP: Weigh yourself regularly and update the value in your settings. This helps keep the
training calculations accurate.
3.2.1 Maximum heart rate
Once you have entered your date of birth, your device automatically sets the maximum
heart rate (
MAX HR ) using the formula 210 – (0.65 x AGE). If you know your real maximum,
you should use that value.
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