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Wellue Bluetooth Wireless Fingertip Pulse Oximeter. iOS & Android APP. SpO2 & Pulse Rate. FDA Approved.
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Amazon.com: iProven Finger Pulse Oximeter, Blood Oxygen Monitor which Measures Respiratory Rate, Oxygen Saturation (SpO2), Perfusion Index and Pulse Rate, Includes Batteries and Lanyard - Oxi-33 : Health & Household
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