Why Is My Garmin Vivoactive 4S Flashing Red? Troubleshooting Tips

“Why does my Garmin watch flash red underneath?” This common question often arises due to the visible red LEDs on the underside of Garmin watches. These red LEDs serve as part of the PulseOx sensor, a feature that measures your blood oxygen saturation levels. When you turn off the PulseOx feature on your watch, these red LEDs stop flashing. In addition to the red LEDs, you may notice green LEDs on the watch’s underside; these green LEDs are an integral component of the Optical Heart Rate Monitor (OHRM), which continuously monitors your heart rate. So, to summarize, the red LEDs are related to blood oxygen measurement, and the green LEDs are associated with heart rate monitoring on your Garmin watch.

“Why is my Garmin Vivosmart 4 flashing red?” If you’ve ever wondered about those red flashing lights on your Garmin Vivosmart 4 and whether you can turn them off, let’s shed some light on the matter. Those red lights are actually part of the heart rate and pulse oximetry sensors built into the device. If you notice these lights while wearing the watch, it’s an indicator that these sensors are active and collecting data. However, if you find the lights visible while wearing it, it’s likely that the watch isn’t snug enough on your wrist. Ensuring a secure and comfortable fit is essential to obtain accurate readings from these sensors. So, if you’re experiencing this issue, consider adjusting the fit of your Garmin Vivosmart 4 for more precise health monitoring. (Note: The original date, “20th July 2019,” is not relevant to this information and has been omitted.)