Inne

https://www.apk-technology.com/lse-pulse-oximeter-high-performance-low-power-consumption-and-longer-battery-life.html

Compared with clamp-based alternatives, pulse oximeters are smaller, more comfortable to wear, and more suitable for prolonged wear. But make no mistake: small can still be powerful. The ring-shaped smart pulse oximeter provides continuous critical health data, such as blood oxygen and heart rate updates, with longer battery life.