“Is a chest strap or other sensor required to monitor real time heart rate?”

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• No, a chest strap or other sensor is NOT required.

  Answered by Chuck 5 years ago

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• Yes, the optical sensor on the watch is designed to measure blood flow to estimate heart rate, so it is not real time heart rate. If you would like to monitor the real time beats per minutes (BMP) you would still want to pair a Heart Rate Monitor Strap.

  Answered by GarminProductExpert 5 years ago

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