Long pressing the UP button when the stopwatch is stopped resets the stopwatch.
If your peak heart rate in the most recent session exceeded the maximum heart rate defined in Personal Settings, Suunto t3 will ask if you want to update your maximum heart rate value after resetting the stopwatch.
If you want to update your maximum heart rate, press the DOWN button. Pressing the BACK button takes you back to Training mode without updating your maximum heart rate.
3.3. Using the speed and distance displays
While training, the Speed and Distance mode provides additional information to help you monitor and adjust your training. The top row displays distance information, the center row displays speed information, (in whichever format was chosen in General settings), and the bottom row displays different information depending on the shortcut selected.
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