Amazon.com: Pulse Oximeter Fingertip- Mini Oximeter Oxygen Saturation Monitor for SpO2/Heart Rate/PI, with Auto Graph Display/Alarm… : Health & Household
OxiPro OX2 Fingertip Pulse Oximeter – OxiPro Medical Ltd
Amazon.com: Pulse Oximeter with Fingertip Oxygen Meter : AILE Compact Fingertip Pulse Oximeter - Blood Oxygen/Heart Rate Monitor - 4 Color Screen Display - Including 2AAA Batteries for Athletic & Home (White) :