"It seems that the new Apple AirPods Pro 3 feature a custom photoplethysmography (PPG) sensor. That means the new AirPods Pro 3 utilize invisible infrared light to measure your pulse and calculate the calories burned. Pretty cool. We got excited thinking the new AirPods Pro 3 could possibly eliminate the need for a smartwatch, fitness band, or chest strap to monitor your heart rate."
"Properly secured, you would think an AirPod won't be moving inside your ear. So our first thought was that this could also lead to more accurate HR measurement since the fit and movement of chest-mounted and wrist-mounted readers can affect their accuracy. However, the accuracy of the AirPod 3 heart rate sensor is still unknown, and early reports from other in-ear HR sensing headphones like the Powerbeats Pro 2,"
AirPods Pro 3 include a custom photoplethysmography (PPG) sensor that uses invisible infrared light to measure pulse and estimate calories burned. The heart-rate sensing requires a nearby iPhone, iPad, or Apple TV for analysis and cannot operate standalone within the earbuds. Accuracy of the in-ear sensor remains unknown, and fit and movement inside the ear can affect measurements similarly to wrist or chest devices. Early reports from other in-ear HR headphones suggest fit can degrade accuracy. The feature may appeal to indoor trainers who prefer not to wear a chest strap or smartwatch and who accept potentially lower accuracy.
Read at Bikerumor
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