*Your actual battery life may vary depending on usage and conditions. If you enable the Ultra battery mode it will increase battery life, but deactivate wrist heart rate tracking. Tour battery mode gives you the longest battery life with lower GPS quality. In Endurance battery mode, battery life is 40 hours with wrist heart rate and 50 hours with HR belt. Touch is disabled during exercise, but you can activate it in your custom mode.
Learn more about the best practices for measuring heart rate from wrist.
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