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If your blood oxygen is lower or pulse rate is lower/higher than the threshold, the WELLUE oximeter will remind you with a buzzer and a corresponding readings flashing. (Because wearing it for a long time will cause pressure on your fingers, it is not recommended to wear it overnight.) You can observe your own historical data at any time to better understand your health with this oximeter. You can customize the abnormal value reminder range, measurement mode, and turn on/off the Beep sound while measuring on the oximeter. You can set the reminder threshold by yourself. Low O2 level limit setting range: 85%~99%. Low Pulse Rate limit setting range: 30~60bpm; High Pulse Rate limit setting Vihealth APP Dash Board History Data Detail Report It's not a medical device and should not be used for any medical purpose or any medical condition.







