Amazon.com: Vibeat Oxylink Wearable Blood Oxygen Monitor - Bluetooth Oxygen Meter Finger Pulse Oximeter with Audio Reminder, Rechargeable O2 Meter for Continuous Tracking with Free App, FSA/HSA Eligible : Health & Household
CVS Health Pulse Oximeter, Measures Oxygen Level & Pulse Rate, Red, 1 EA
LOOKEE® O2Ring by Wellue, Continuous Overnight Ring Pulse Oximeter Oxygen Monitor – LOOKEETech
Where to buy pulse oximeters: Amazon, Walmart, CVS, and more