“Can the HR function be turned on/off to conserve battery life?”

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• Turning Off the Wrist Heart Rate Monitor For the fēnix® 3 HR, the default value for the Wrist Heart Rate setting is Auto. The device automatically uses the wrist-based heart rate monitor unless you pair an ANT‍+® heart rate monitor to the device. Hold UP. Select Settings > Sensors > Wrist Heart Rate > Off.

  Answered by asiff 9 years ago

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• Yes you can, but you would lose the ability to gauge resting heart rate.

  Answered by wada 9 years ago

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• Battery life is amazing no need

  Answered by Gbone 9 years ago

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• I have not turned hr on and off and the charge lasts at least couple of weeks. The gps sucks more charge than anything but it only activates when you are using an app that requires gps

  Answered by JimmyV 9 years ago

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• Yes

  Answered by bulldogdanny79 9 years ago

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