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Amazon.com: Blood Oxygen Saturation Monitor, Pulse Oximeter Fingertip, OLED Portable Oxygen Monitor, O2 Saturation Monitor, Heart Rate Monitor, SpO2 Finger Pulse Oximeter with CarryingCase,Lanyard,Batteries,Black : Health & Household
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Finger Pulse Oximeter Blood Oxygen Saturation SpO2 Heart Rate O2 Monitor CE - LED - Blue, New - Walmart.com
Link Health Series Fingertip Pulse Oximeter With Spo2 Monitor Blood Oxygen Saturation Sensor Led Screen : Target
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Finger Pulse Oximeter [BM1000] : ID 4580 : $19.50 : Adafruit Industries, Unique & fun DIY electronics and kits
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