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Tips Heart rate monitor

If your heart rate data does not seem to be reliable or it is not visible, please follow these tips:

  • Avoid applying cream or lotions on the area where you are wearing your device.
  • Clean your arm before putting the ZeFit4HR on.
  • Wear the watch around the wrist, just above the bone. Tighten the watch to your wrist. Your ZeFit4HR should be snug but comfortable.
  • Wait for a first display of your heart rate on the screen before starting an activity.
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