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Fingertip Pulse Oximeter, Blood Oxygen Saturation Monitor (SpO2) with Pulse Rate Measurements Portable Digital Reading LED Display - Walmart.com
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Amazon.com: Pulse oximeter fingertip, Portable blood oxygen saturation monitor for heart rate and SpO2 level, O2 monitor finger for oxygen,Pulse Ox,Oxi Include carrying case,lanyard and batteries, Grey-White : Health & Household
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Finger Pulse Oximeter [BM1000] : ID 4580 : $19.50 : Adafruit Industries, Unique & fun DIY electronics and kits
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Amazon.com: mibest OLED Finger Pulse Oximeter, O2 Meter, Dual Color White/Luxury Gold : Health & Household
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