FORERUNNER 255 SERIES Owner’s Manual

Setting an Abnormal Heart Rate Alert

CAUTION

This feature only alerts you when your heart rate exceeds or drops below a certain number of beats per minute, as selected by the user, after a period of inactivity. This feature does not notify you of any potential heart condition and is not intended to treat or diagnose any medical condition or disease. Always defer to your health care provider for any heart-related issues.

You can set the heart rate threshold value.

  1. From the heart rate glance, hold .
  2. Select Heart Rate Options > Abnormal Heart Rate Alerts.
  3. Select High Alert or Low Alert.
  4. Set the heart rate threshold value.

Each time your heart rate exceeds or drops below the threshold value, a message appears and the watch vibrates.