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Amazon.com: Fingertip Pulse Oximeter, Blood Oxygen Saturation Monitor (SpO2) with Pulse Rate Measurements and Pulse Bar Graph, Portable Digital Reading LED Display, Batteries and Carry Case Included : Health & Household
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HealthTree Pulse Oximeter Fingertip, Oxygen Blood Monitor for Adults, Heart Rate Monitor Fingertip and Spo2 Oxygen Saturation, Portable Oxygen Reader with OLED Screen (Black) : Amazon.co.uk: Health & Personal Care
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