Amazon.com: HealthSmart Pulse Oximeter for Fingertip, Displays Blood Oxygen Saturation Content, FSA HSA Eligible, Pulse Rate and Pulse Bar with LED Display, Accurate and Reliable, Batteries and Lanyard Included : Health &
Sejoy Pulse Oximeter Fingertip with Sound Reminder, Smart Blood Oxygen Saturation Monitor with Carrying Bag, Batteries, and Lanyard - Walmart.com
ADC 2100 DIAGNOSTIX Digital Fingertip Pulse Oximeter - Stethoscope.com