O2 Score is a measure of oxygen shortage during whole sleep. It combines frequency, duration, and depth of oxygen drops. A higher score means oxygen is richer. If it's yellow or red, please ask your doctor for advice.
Frequently Asked Questions
What is O2 Score?
Where can I find more guidance about the report?
Click the question mark in the upper right corner of the APP report page.
Do I need to pair Bluetooth?
DO NOT PAIR in the system settings of your phone. Make sure the Bluetooth is enabled on your phone and device’s battery is not out.
Why do I need to allow Location access for Android?
With android phone, you need to allow Location access to make Bluetooth work. We DO NOT collect your location data.If you have refused the permission, you can try following steps to allow the access:
1)Reboot your phone;
2)Turn on “location”on your phone;
3)System settings -> Apps-> ViHealth, allow location access.
Why I can’t connect device with App after updating iOS system software?
If you can’t connect your device after updating iOS, please try the following steps:
1)In the system settings, turn off and turn on Bluetooth;
2)In the Control Center, tap the Bluetooth icon repeatedly to re-enable Bluetooth.
Turn on device, run App to connect it.
How to sync data?
Take off the device. After the countdown, the data will be ready for sync.
1)After the countdown, open App to sync data.
2)Or next time after you turn on your device, open App to sync.
If measurement time is less than 2 minute, there will be no data.
When recording, do I need to open App?
The device has built-in storage, it is not necessary to open App.You can open app to change some settings of device.
How many sessions of data can be stored?
The device can store last 4 sessions, up to 10 hours for each.
Which finger is recommended ?
The ring is elastic, inside circumference range is about 2.0~3.2 inch.
Thumb and index finger are preferred.
1）Do not use middle finger.
2）Avoid loose wearing
Can it be used during fitness?
Generally speaking, yes. However, frequently movement may make the readings unavailable.Usually, the readings will recover in a few seconds after stop moving.
How to power on?
Wear the device on your finger, it will power on automatically. If can’t power on, charge you device first.
How to power off the device ?
Take the device off your finger, it will power off automatically in a while if not connected to App.
If the battery runs out during use, will the data be saved?
Can I change the settings of vibration?
Yes. When you connect the monitor to your phone, you can turn on/off the vibration, change intensity or threshold.
How to correct device time?
Connect to your phone, device clock will follow your phone time automatically.
Can the screen be always on?
Yes, you can set the screen mode in App. Battery will runs out a bit faster in the Always On Mode.
How to wake up the screen when it goes off?
Touch the key on the top of device, you can wake up the screen. You can also check time and battery with the touch key.
Why I get different readings by Oxygen Monitors of Wellue and other manufacturers?
Please be assured that all Wellue products provide medically accurately measurement.
Different manufacturers utilize algorithms with different average SpO2 times, which is a significant element when calculating the reading. The shorter the collecting duration, the more sensitive the result, the fast the response. Oxygen monitor with too long assessment time is not the best choice for oxygen saturation detection, especially during sleep. Wellue’s intelligent averaging algorithm collects data quickly and identifies the precise SpO2 value.
Therefore, it is not rigorous to compare oxygen monitors that utilize different averagingcomparing result will be much more accurate if obtained by an arterial blood gas.
Could I log my data in the Apple Health?