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Amazon.com: LPOW Bluetooth Fingertip Pulse Oximeter, Blood Oxygen Saturation Monitor (SpO2) with Pulse Rate, Perfusion Index with Alarm, OLED Display, APP for Smart Tracking, Batteries and Lanyard Included : Health & Household
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Amazon.com: Wellue Wrist Pulse Oximeter for Oxygen Level and Pulse Rate, Continuous Blood Oxygen Monitor With Vihealth APP, Bluetooth Finger Meter O2 Sensor : Health & Household
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