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Amazon.com: Dr.Oxi Pulse oximeter fingertip, Blood Oxygen Saturation Monitor , Portable Blood Oxygen Saturation Monitor for Heart Rate and SpO2 Level (BLACK) : Health & Household
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Sejoy Pulse Oximeter Fingertip with Sound Reminder, Smart Blood Oxygen Saturation Monitor with Carrying Bag, Batteries, and Lanyard - Walmart.com
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