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Amazon.com: WRINERY Pulse Oximeter Fingertip, Oxygen/ O2 Saturation Monitor, OLED Portable Oximetry with Batteries, Lanyard (Rose gold-black) : WRINERY: Health & Household
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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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