Pulse oximeter fingertip with Plethysmograph and Perfusion Index, Portable Blood Oxygen Saturation Monitor for Heart Rate and SpO2 Level, O2 Monitor Finger for Oxygen,Pulse Ox,Oximetro,(Red-Orange) 4.7 out of 5 stars 1,939
https://www.amazon.com/walgreens-pulse-oximeter/s?k=walgreens+pulse+oximeter

