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O2Ring by Wellue® - Continuous Pulse Oximeter (Best Overnight Track Oxygen Level & Heart Rate with Vibration Alert on Finger)

Video description:

Excellent video that shows all pros and cons of the Wellue O2Ring:

Product Description

Wellue O2Ring Portable Sleep Monitor for Homecare 

The World's First Wearable Ring Oxygen Monitor

√ Track blood oxygen levels and heart rate every second with medical accuracy.

√ Built-in vibrator alerts low blood oxygen levels or abnormal heart rate events.

√ Totally free APP and PC report.

√ Sleek, comfortable, elegant design.

√ Built-in memory.

√ Built-in rechargeable battery.

Take a Sleep Apnea Test at Home
Export or print overnight oximetry reports from PC software, share unlimited PDF/CSV format reports to your sleep study doctor.CSV report shows the exact O2 & heart rate values, bringing great help for home sleep apnea study.

Note: only work with Windows system, not compatible with Mac.
Who Will Benefit?

Designed for Every Second

Just wear O2Ring on your thumb, it will automatically detect and track your blood oxygen saturation, heart rate and body movements every second..


Learn if There're Oxygen Events

A quick glance in the morning tells you your sleep blood oxygen levels, resting heart rate and body movements.

Know How Severe Your Breath Stopped

In addition to tracking your oxygen level per second, O2Ring also detects how long your oxygen below 90%, how many times O2 drops over 4% during the whole night.

Get More Detailed Info

Tap the Magnifer icon, know the exact value of your O2 and heart rate when events happened.

Know If Your Pulse Strong

1> Peice of mind on your finger, adjustable vibration feedback for low oxygen level and irregular heart rate.

2> The lghtest, smallest, most comfortable ring sensor for overnight continuous monitoring, durable and adapt to most fingers.

3> Free professional APP and PC report shows the graphic sleep report and trends of blood oxygen level condition, heart rate and motion

4> Rechargeable: 2 hours charging for up to 14 hours usage. The device runs automatically when you wear it

5> You Will Get: 12 month Worry-Free Warranty, Lifetime technical support, Top grade customer service of fast response within 12h.

Smart Vibration Alert Delivers Peace of Mind

Breathe More, Sleep Better

No worry to ignore every stopped breathing events, the patented O2Ring will vibrate to alert you when oxygen level is lower than your preset threshold while you're alseep.

No Guesses, No Worrires

No matter your heart rate is too high or too low, it will identify and vibrate to notify you! Wear O2Ring with you, get peace of mind, without any guesswork.

The Perfect Combination of Form and Function

Sleek. Comfortable. Capable.

O2Ring is the perfect accessory if you want a device that won't cramp your style. With soft and comfortable silicone, we make it easy to get the O2Ring fit for different finger sizes.

Best Wearable Experience. No Oppression.
The O2Ring™ never slips from your finger, don't oppress your finger to make it numb, completely free your finger!
What Makes the Wellue O2Ring™ Different
Users can benefits from our patent ring sensor no matter from wearing experience, nor Free APP, Free PC Software and the affordable price. 
Bluetooth 4.0 BLE
Battery/Battery Life
3.7Vdc, Rechargeable Lithium-polymer/12-16 hours for typical use
Recorded parameters
Oxygen level, Heart Rate
Mobile APP
IOS 9.0 or above, Android 4.4 or above
Oxygen level range
70% to 99%



Q: What is a Pulse Oximeter?

A: A pulse oximeter is a non-invasive device that indirectly monitors, and displays, both blood oxygen saturation (SpO2) and pulse rate (heart rate). Pulse oximeters provide an easy way of assessing your blood oxygen level and pulse rate.


Q: What is SpO2?

A: SpO2 is also known as oxygen saturation. It is a measure of how much oxygen the blood is carrying as a percentage of the maximum it could carry.


Q: What is the normal range of SpO2?

A: The normal range for SpO2 is typically considered to be from 95% - 100%. The measurement may be lower for people who live in high altitudes. If the number drops to 90% or lower, that's a cause for concern. That's generally the level where a doctor might put you on supplementary oxygen and keep you in the hospital for observation.


Q: What is the normal range for pulse rate?

A: The normal resting range for pulse rate is typically considered from 60 ~ 100 beats per minute (BPM). As your healthcare professional this question as it pertains to you.


Q: What is the Perfusion Index (PI%) a measurement of?

A: The Perfusion Index is the ratio of pulsatile blood flow to the non-pulsatile, or static, blood within peripheral tissue, such as at a fingertip, toe, or ear lobe. As such, it is a relative assessment of the pulse strength at the monitoring site. A higher index indicates widening arteries and stronger blood flow, while a lower index indicates narrowing arteries and weaker blood flow. Change in the index, over time, should be monitored, as there is no "normal" reading to apply for any and every user. Each individual is different and needs to establish their own baseline.


Q: What kind of conditions may cause an inaccurate reading?

A: Cold hands, poor circulation, very weak pulse, movement, fingernail polish, and acrylic nails may cause inaccurate readings and results.


Q: The SpO2 reading is not changing on the display - it's stuck...

A: SpO2 levels do not change like a pulse rate. It is very slow to change.


Q: I do not see the battery indicator symbol on the display...

A: The battery indicator symbol only appears when the batteries are weak or low.


Q: I have installed new batteries but the device still does not turn on. What could be the problem?

A: The battery placement for oximeters is different from others. Even though the two springs are on the same side, the two batteries are still required to be installed in opposite directions. The diagram shows the correct battery placement. One product image shows the batteries' installation.  If your device still does not work, please contact the manufacturer to receive a free replacement.


Q: Does it measure the heart rate?

A: Yes, this device would measure heart rate along with blood oxygen levels.


Q: Are the devices FDA or CE Conformity Assessed?

A: Yes, all of our devices are strictly made compelling to the rules of CE and FDA.
FDA requires pulse oximeters to have SpO2 accuracy of ±2%, the pulse oximeter deviates less than 1% under lab conditions.


Q: Does this product ever need recalibration?
A: The finger pulse oximeter does not need any calibration. However, if you have any issues with the device, please check the user manual and Precaution or contact us. We will be more than happy to further assist.