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Medical-grade adult and pediatrics handheld pulse oximeter, accurate measurement of SpO2 and pulse rate. Professional choice for clinics and family care. – Wellue
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Amazon.com: Fingertip Pulse Oximeter, Blood Oxygen Saturation Monitor (SpO2) with Pulse Rate Measurements and Pulse Bar Graph, Portable Digital Reading LED Display, Batteries and Carry Case Included : Health & Household
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Pulse oximetry: Understanding its basic principles facilitates appreciation of its limitations - ScienceDirect
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Fingertip Pulse Oximeter Finger Blood Oxygen Saturation Monitor SpO2 Level Heart Rate Monitor - Walmart.com
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