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Amazon.com: Pulse Oximeter Fingertip, Digital Blood Oxygen Saturation Monitor for Heart Rate Monitor and SpO2 Levels, Portable LCD Pulse Oximeter (Batteries Included) : Health & Household
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Amazon.com: HoMedics Pulse Oximeter, Blood Oxygen Saturation Monitor with Easy One-Touch Operation, Fingertip Oximeter for Measuring Blood Oxygen and Pulse Rate : Health & Household
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