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Amazon.com: Finger Pulse Oximeter Fingertip, Portable Blood Oxygen Saturation Monitor for Heart Rate and SpO2 Level, Pulse Ox,Oximetro, O2 Monitor Finger for Oxygen,(Purple) : Health & Household
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BUYTER Finger Tip Pulse Oximeter, Heart Rate Monitor+ Blood Oxygen Saturation Monitor with Led Display SPO2 Portable Pulse Oximeter Blue with Lanyard : Amazon.sg: Sporting Goods
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