Wellue Fingertip Blood Oxygen Saturation Monitor with Alarm, Batteries, Carry Bag & Lanyard for Wellness Use Bluetooth Color:Bluetooth Take the Bends Well Made

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Wellue Fingertip Blood Oxygen Saturation Monitor with Alarm, Batteries, Carry Bag & Lanyard for Wellness Use Bluetooth Color:Bluetooth Take the Bends Well MadeWellue Fingertip Blood Oxygen Saturation Monitor with Alarm, Batteries, Carry Bag & Lanyard for Wellness Use Alarm for Abnormal Readings 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.) Store up to 12 groups of data