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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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EMAY Sleep Oxygen Monitor with App for iPhone & Android | Track Overnight & Continuous Blood Oxygen Saturation Level & Heart Rate with Professional Report | Memory Stores Data Up to 40 Hours
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EMAY Sleep Oxygen Monitor with App for iPhone & Android | Track Overnight & Continuous Blood Oxygen Saturation Level & Heart Rate with Professional Report | Memory Stores Data Up to 40 Hours
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