Meet the Oura Ring
Find out everything you need to know about the Oura Ring 4.
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Date published: February 2026 | By Steven Smith
The Oura Ring is a smart health wearable that tracks sleep, activity, heart rate, and recovery all packed into a sleek, lightweight ring. It offers personalised insights to help you improve your wellbeing.
What does the Oura Ring 4 do?
Keeping your health close at hand
Keep an eye on your health 24/7 with the all-titanium or ceramic Oura Ring 4. With upto 8 days of battery life, the Oura Ring 4 helps you track your health and fitness including sleep, activity and readiness scores. You can use these to keep an eye on your overall health and wellbeing.
Sleep - wear the Oura Ring to bed and you'll be able to see your sleep duration, sleep quality, amount of deep and REM sleep, how long it took you to fall asleep and more to give your sleep a score.
Readiness - the readiness score gives an indication of how prepared your body is for mental and physical exertion. Bringing together trends in sleep, recent activity, heart rate variability and body temperature, the higher your score the more ready your body is.
Activity - this gives an idea of your recent activity levels comparing to longer term averages to give you an idea of how you are doing.
Tap into advanced health data
Available on Android and iOS, the Oura app brings all of your health data together. With a monthly subscription, you can unlock extra health insights to help you look after yourself. As well as sleep, readiness and activity scores, you'll be able to measure heart health, stress, women's health and even get an indication that you're coming down with something before you notice the symptoms.
Get the perfect fit, day and night
With a range of sensors tracking your health, the Oura Ring 4 doesn't follow standard ring sizes. It's also sized differently from the Oura Ring Gen 3. Pick up the Oura Ring 4 smart ring sizing kit to help you find the perfect fit.
Which Oura Ring is right for me?
| Feature | Oura Ring 3 | Oura Ring 4 |
|---|---|---|
Sensor Design | 3 raised sensors on the inside of the ring | Recessed within the body of the ring |
Battery Life | Upto 7 days | Upto 8 days |
Material | Titanium exterior, epoxy interior | Full titanium, or zirconia ceramic |
Weight | 4g-6g | 3.3g-5.2g (titanium model), 5.1g-8.1g (ceramic model) |
FAQs
Is the Oura Ring 4 waterproof?
With an IP68 rating good for depths upto 100m, and a safe operating temperature range of -10 to 52°C, you'll be able to wear your ring in the shower, while washing up, swimming, snorkelling, in the sauna or hottub, or even in a cryotherapy tank. Make sure to refer to the manufacturer's guidelines.
What is the best finger to wear the Oura Ring 4 on?
While the Oura Ring 4 can be worn on any finger on either hand, it's recommended you wear it on the index, middle or ring fingers as the sensors will get a better reading here.
Is the Oura Ring 4 better than a smart watch?
Smart watches offer some fitness tracking capabilities, which vary between brands. They also offer further functionality, in many cases like a mini, wrist-worn smart device. Oura Ring 4 offers dedicated fitness tracking without the distraction of notifications, screens or apps.
Do Oura Rings have GPS?
The rings themselves do not have in-built GPS. They rely on a connection to your phone for GPS tracking.
How do Oura rings measure stress?
Stress is measured using a combination of data points including heart rate, heart rate variability (HRV), skin temperature and movement.
Will my Oura ring work without a phone?
In the short term, the Oura Ring will continue to track data without an active connection to a phone. You will lose GPS functionality, and the device can only store limited data. To gain live tracking, GPS and backup your data, you will need to connect with and synch to a phone.
Does my Oura ring need an internet connection?
The Oura Ring will collect and store data without internet, and will transfer to the app on your phone via bluetooth. You will need an internet connection to update the ring to the latest firmware.
