Amazon.com: 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, (Black-White) : Health & Household
BLT M50 Oximeter Finger with Pulse, Blood Oxygen Meter Finger, Pulse Oximeter Fingertip, Saturation Monitor with SpO2, Plethysmograph and Perfusion Index, Batteries Included (White)