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Beurer PO30 Fingertip Pulse Oximeter with 4 Color Display Formats, Lanyard, Protective Storage Bag, and Batteries – Blood Oxygen Saturation Monitor with Heart Rate, Oxygen Meter Finger Pulse Oximeter: Amazon.com: Industrial &
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Pulse Oximeter Fingertip, Digital Blood Oxygen Saturation Monitor for Heart Rate Monitor and SpO2 Levels, Portable LCD Pulse Oximeter (Batteries Included) : Health & Household - Amazon.com
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