What's a Pulse Oximeter, and Do I Really Need One at Home? - The New York Times
Covid: How a £20 gadget could save lives - BBC News
K-Life Pulse Oximeter
Amazon.com: Oxygen Meter Finger Pulse Oximeter, COOCEER O2 Sat Monitor Finger for Oxygen, Blood Oxygen Meter Finger, Accurate Oxymeterfingertip, Large Red Digital Oximeter with Pulse : Health & Household
EMT Triage Kit with Thermometer, Stethoscope, BP Cuff, and Oximeter – ASA TECHMED