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How can I get a more accurate reading for heart rate monitoring?

The accuracy of the optical sensor depends on the positioning of the device on your wrist, movements performed and your physiology.

Daily use

For daily use, we recommend carrying your device at a distance of one finger above the bone of your wrist.

Physical Activity / Exercises

During workout or physical activity, we suggest you wear ZeRound3 higher on your wrist to record a more accurate heart rate reading.

Please also ensure the following:

  • Make sure your device is in contact with your skin.
  • Wear device on your non-dominant hand.
  • Do not over-tighten the wristband. This will ensure a better comfort and to not restrict blood circulation.
  • Avoid putting cream or lotions on the area where you place your device.
  • Clean the sensor lens with a dry cloth from time to time.
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