Wellue O2 Ring Oxygen Monitor with Vibration Alarm Oximeter for Sleep Apnea Test

O2Ring continuously monitors blood oxygen saturation (SpO2) and heart rate to help detect sleep apnea. When sleep apnea occurs (a pause or stop in breathing), blood oxygen levels drop. Loud Snorers Sleep Apnea Sufferers Asthmatic Patient COPD Pneumonia Pilots.

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