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Signature® LK87 2-Pack Fingertip Pulse Oximeter LED Blood Oxygen Sensor Saturation SpO2 Monitor Lanyard Perfusion Index Batt Included - Walmart.com
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Amazon.com: BUYTER Finger Tip Pulse Oximeter, Heart Rate Monitor+ Blood Oxygen Saturation Monitor with Led Display SPO2 Portable Pulse Oximeter Blue with Lanyard : Health & Household
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