What's a pulse oximeter? Should I buy one to monitor COVID at home?
Comparison of SpO2 and heart rate values on Apple Watch and conventional commercial oximeters devices in patients with lung disease | Scientific Reports
Fingertip Pulse Oximeter, Blood Oxygen Saturation Monitor (SpO2) with Pulse Rate Measurements and Pulse Bar Graph, Portable Digital Reading LED Display, Batteries and Carry Case Included : Health & Household
Do I Still Need a Pulse Oximeter at Home to Monitor Covid-19? - The New York Times
Penn Medicine Study: Pulse Oximeters Did Not Change Outcomes for Patients in COVID-19 Monitoring Program - Penn Medicine
Walgreens Pulse Oximeter with Respiratory Rate | Walgreens