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Amazon.com: Wellue WearO2 Wearable Oxygen Monitor Bluetooth Pulse Meter with Vibration, Free APP, Continuously Track O2 Level & Heart Rate : Health & Household
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Amazon.com: Rechargeable Pulse Oximeter Fingertip,SmileCare Blood Oxygen Meter Finger Oximeter,Bluetooth Oxygen Monitor with Free App iOS & Android : Health & Household
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Wellue Pulse Oximeter, Bluetooth Fingertip Oxygen Monitor with Pulse Rate Measure and Abnormal Reminder, Free APP, Batteries and Lanyard Included, Black, FS20F - Walmart.com
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This app claims to let users monitor SpO2 levels and pulse rate with your smartphone: Here's how it works | Tech News
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