Tips for Erratic Pulse Oximeter Data

If the pulse oximeter data is erratic or does not appear, you can try these tips.

  • Remain motionless while the watch reads your blood oxygen saturation.
  • Wear the watch above your wrist bone. The watch should be snug but comfortable.
  • Hold the arm wearing the watch at heart level while the watch reads your blood oxygen saturation.
  • Use a silicone or nylon band.
  • Clean and dry your arm before putting on the watch.
  • Avoid wearing sunscreen, lotion, and insect repellent under the watch.
  • Avoid scratching the optical sensor on the back of the watch.
  • Rinse the watch with fresh water after each workout.
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November 2025