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Amazon.com: iProven Pulse Oximeter Fingertip - Blood Oxygen (O2) Saturation Level Monitor - with Heart Rate Detection - Oximetro De Pulso - Finger Oximeter with Pulse Indicator - Best Accuracy by OXI-27
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Amazon.com: Pulse oximeter fingertip with Plethysmograph and Perfusion Index, Portable Blood Oxygen Saturation Monitor for Heart Rate and SpO2 Level, O2 Monitor Finger for Oxygen,Pulse Ox,Oximetro,(Red-Orange) : Health & Household
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