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Patented Ring Sensor, comfortable and easy to use
Free APP for mobile phone and tablets
Professional PC report for sleep analysis, easy to share and print
Rechargeable battery up to 16 hours continuously record, the best choice for overnight monitoring
Build-in smart vibrator, wake you up if blood oxygen level too low
Overnight Wrist Oxygen Monitor with APP & PC Report Vibration Notification for Low O2 Level Track O2 Saturation and Heart Rate B07SZ2NV5L