Wellue O2Ring™ Continuous Ring Oxygen Monitor. Continuously Track Overnight Oxygen Levels and Heart Rate. Provide detailed report and analysis for home sleep study.
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Bluetooth Low Energy wearable ring measures oxygen saturation and pulse rate - nordicsemi.com
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FL340 Pulse Oximeter with APP & PC Software, Vibration Notification
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Wellue Checkme O2 Max Pulse Oximeter O2 Sensor Ring Tracking SpO2 Heart Rate 72h | eBay
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Wellue KidsO2 Ring Pulse Oximeter Bluetooth Children O2 Monitor All-day Monitor | eBay
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