Maximum heart rate is estimated based on the birth year and birth month (age) you input. Be sure to input your birth year and birth month so this calculation can be performed.
If you already know your maximum heart rate value, you can also input it. If you do, your input value is giving priority.
• Never over-exert yourself when determining your maximum heart rate with this watch. If you want to know an accurate value for your maximum heart rate, consult with your physician and perform measurements in a controlled environment.
