This article outlines best practices, key information, and safety information to keep in mind while using your Oura product.
General Use
Memory Capacity
Battery & Charging
Care & Maintenance
Ring Stuck?
Safety Information
Information on EMF
Proposition 65
Sustainability
PSE Certification (Japan)
General Use
You can wear your Oura Ring 24/7. It's built for all-day comfort.
For the best fit and most accurate readings, your ring should feel snug but comfortable, not tight and restrictive. As with any ring, it shouldn't cause constant pressure, pain, or numbness. If you notice marks that don't fade shortly after removing the ring, or your finger regularly feels pinched, try moving it to a different finger or adjusting your size.
We recommend wearing your Oura Ring on your non-dominant hand. This will likely reduce contact with surfaces and other objects throughout the day, helping protect both your ring and your skin.
We also recommend avoiding wearing your Oura Ring directly next to another ring. When rings are worn side by side, they can create uneven pressure, trap moisture that leads to skin irritation, and cause scratching on both pieces of jewelry over time.
The Oura Ring is water-resistant up to 100 meters (~330 feet), meaning that you can wear it while showering, swimming, or partaking in recreational diving (e.g. snorkeling), but we don’t recommend using your ring while scuba diving or keeping it submerged underwater for over 12 hours.
Oura Ring operating temperature ranges from -10–52°C / 14–125°F. You can safely wear your ring in the shower, hot tubs, saunas, ice baths, and cryotherapy tanks. However, extended exposure to extreme temperatures (below -20°C / -4°F or above 60°C / 140°F) may lead to battery damage.
For more product specifications, see Oura Ring 5 and Previous Oura Ring Generations.
Data Security
Oura employs data encryption, which ensures secure pairing of your ring and app. This means your personal data will be kept fully secure in case an external party ever gets a hold of your ring.
Oura App and Firmware
The Oura App is available on the App Store and Google Play.
The Oura App is supported on iOS devices running Apple iOS 16 and higher, or Android devices running Android 11 and higher with Google Play services. Your device must support Bluetooth 5.0.
Ring firmware updates are accessible directly from your Oura App.
Memory Capacity
We recommend you sync your Oura Ring daily with your Oura App to avoid data loss. The amount of data your Oura Ring can store without syncing depends on the ring model: Oura Ring 5 is capable of storing up to three days of data, while Oura Ring 4 and Gen3 can store up to one week (seven days) of data.
Airplane Mode can only be enabled for a maximum of seven days. This is because Airplane Mode is automatically disabled each time your ring is placed back on its charger. Once Airplane Mode is disabled upon this action, a data sync between your ring and app will be initiated upon re-charging. If you'd like to keep Airplane Mode enabled for extended periods of time, you'll still need to charge your ring every few days for optimal battery performance and daily use. Be sure to re-enable Airplane Mode following the completion of charging—instructions on how to do so can be found in this article.
Battery & Charging
Oura Ring has a rechargeable, non-replaceable 15mAh (US6) - 22mAh (US13) Lipo battery.
Charging at room temperature is recommended. Do not use or store the charger in humid environments like bathrooms.
See Ring Battery Tips and How to Use Your Oura Charger for more information.
Care & Maintenance
Cleaning Your Oura Ring
To clean your Oura Ring, rinse it with a small amount of mild soap and water, then dry it thoroughly before putting it back on.
If you follow more rigorous handwashing protocols, you can remove your ring while scrubbing, then wash it separately as you would other jewelry.
Try to avoid trapping moisture (for example, water, sweat, soap, or hand sanitizer) under your Oura Ring for extended periods. If your hands get wet, slide the ring briefly to let the skin underneath breathe, or remove it, dry your finger and the ring, and put it back on.
Hand sanitizer is safe to use while wearing your Oura Ring. That said, as with any ring, letting sanitizer sit under the band without fully drying can cause skin irritation for some people. If you use hand sanitizer frequently, take a moment to let the skin underneath dry fully after each application.
Tips for Handling and Safety
- Don't leave the ring exposed to heat for extended periods
- Don't puncture the Oura Ring or its battery
Tips for Scratch Prevention
The Oura Ring may get scratched and can itself scratch softer metal jewelry or other objects in close contact with the ring, such as phone covers made of gold, silver, or aluminum. Some ceramic phone covers with a soft coating may also get scratched.
Scratches or other damage caused by wear and tear are not covered by Oura's warranty policy. To help prevent scratches and increase the longevity of your ring:
- Wear your Oura Ring on your non-dominant hand to reduce the amount of contact with various surfaces and objects you interact with on a daily basis
- Avoid wearing other rings adjacent to your Oura Ring. Other rings may scratch your Oura Ring while rubbing against it
- Consider removing your Oura Ring in situations that involve friction (e.g. weightlifting), or when handling objects made of metal, ceramics, or stone (such as handling pots or pans)
Removing a Stuck Ring
Finger size naturally fluctuates throughout the day based on factors like temperature, food and beverage intake, exercise, and changes in altitude. There may be times when your ring feels harder to remove than usual.
If your ring feels stuck:
- Wet your finger with cold water and a small amount of soap, then slowly twist the ring to ease it off
- Raise your hand above your heart for a few minutes to help reduce swelling, then try again
- If your finger is very painful, swollen, or appears discolored compared to your other fingers, stop attempting to remove the ring and seek medical attention
If you're unable to remove the ring on your own, seek medical attention.
Guidance for medical professionals
These guidelines are for informational purposes and should only be carried out by trained medical professionals with the appropriate tools, such as a medical-grade ring cutter capable of cutting titanium. The Dolphin Cutter, an FDA-registered ring cutter, is one option. Cutting a ring without the proper expertise can cause injury.
- Orient the ring so the sensors are on the palm side of your finger. For Gen3 Heritage, the flat plane should be on the top of your finger, and for Gen3 Horizon, Oura Ring 5, and Oura Ring 4, the dimple should be on the palm side of your finger
- Mark two cut locations on either side of the ring (at 3 and 9 o'clock) with a pen, marker, or tape
- Rotate the ring to access one of the marked cut points and make the first cut
- Rotate the ring if needed and cut at the other location
Safety Information
General Safety
Oura products have been through various testing and analysis phases, and we continue to test them for safety.
Oura Ring is not a medical device and is not intended to diagnose, treat, cure, monitor, or prevent medical conditions or illnesses. Please do not make any changes to your medication, nutrition, or workouts without first consulting your doctor or another medical professional.
Keep the ring away from children. This product is not intended for individuals under the age of 18. Seek immediate medical attention if you know or suspect that a child has swallowed the ring.
As with any ring or wearable device, some people may notice skin changes where the ring sits against the skin. These reactions are typically related to pressure, moisture, friction, or individual skin sensitivity — not a product defect. These types of skin changes are not unique to Oura products; they've been reported with many other rings and wearable devices worn snugly against the skin over time.
If you notice redness, itching, flaking, or sensitivity under or around the ring:
- Remove the ring and let the skin rest
- Gently wash the area with mild soap and water, then dry both your skin and the ring completely
- If your skin feels dry, you may apply a gentle moisturizer. Make sure the area is fully dry before putting the ring back on.
Most mild irritation improves within a few days of not wearing the ring.
If irritation is painful, involves more significant skin changes, or doesn't begin to improve after about a week, we recommend speaking with a doctor or dermatologist.
Seek prompt medical attention if your finger appears swollen, feels significantly uncomfortable, or looks noticeably different from your other fingers and the ring is difficult to remove, or if you notice sudden or unexpected skin changes in the area.
If you ever suspect your ring may be damaged or defective (for example, visible cracks, sharp edges, unusual warmth, or changes to the ring's surface) in the same area where you're experiencing skin symptoms, please contact us so we can review your case and help with next steps.
Light Emission
The Oura Ring uses infrared (IR), red, and green light-emitting diodes (LEDs). These lights do not generate any appreciable heat or pose a health hazard.
Battery Safety
Avoid handling batteries, or working on devices with machinery that contain batteries, while wearing your Oura Ring. In certain cases, where both the cathode and the anode of another battery touch the ring, there is a risk of a short circuit which is similar to standard metallic rings. This can result in a potentially dangerous shock. Please take the proper precautions to avoid these situations.
Travel and Daily Use
Be cautious when moving heavy objects while wearing your ring to prevent it from getting caught on any fixed structures.
UV light won't affect the ring's materials.
The molding polymer used in the Oura Ring can handle short exposure to acetone.
You can wear the Oura Ring through airport X-ray machines, metal detectors, and scanners.
Information on EMF
The Oura Ring is a Bluetooth Smart®, class 2 device. Bluetooth is only active during a small portion of each day—well below 1%. Data is transmitted continuously when the ring is syncing with the app and during firmware updates.
The limit for Specific Absorption Rate (SAR) for a device like the Oura Ring is 2.0 W/kg for head and body. The Oura Ring SAR level is 0.0003 W/kg. For context, all cell phones sold in the United States tend to have a SAR level at or below 1.6 W/kg.
If you'd like to temporarily stop Bluetooth transmissions from your ring, you can enable Airplane Mode on your Oura Ring. While active, the ring won't communicate with the Oura App or other devices, and your data won't sync until the next time you place the ring on its charger.
Proposition 65
Oura Ring 4 Ceramic:
- Based on current information, this product does not require a Proposition 65 warning.
Oura Ring Gen3 and Oura Ring 4:
- WARNING: This product may contain chemicals known to the State of California to cause birth defects or other reproductive harm.
For more information on Proposition 65 chemicals, please visit: https://www.p65warnings.ca.gov/
Sustainability
We are being mindful of how we grow in a socially responsible manner. When it comes to what we currently have in place, we take pride in our focus on sustainability in the manufacturing of the Oura Ring. We have done a number of independent carbon footprint reports to measure our production emissions. Additionally, Oura only uses reputable suppliers and vendors who are compliant with local employee laws and social legislation. We have multiple ongoing initiatives within Oura and look forward to sharing more about them in the future.
If you’re no longer using an old ring, we ask that you perform a factory reset on it first, and pass it along to a friend or family member if it's still in quality condition. Otherwise, we ask that you recycle it, or dispose of both the ring and internal battery in accordance with your local laws and regulations. Special handling may be required. The charger is an electronic device and local legislation for electronics recycling should be followed.
Read more about our Device Recycling Program.
PSE Certification (Japan)
The Product Safety Electrical Appliance & Material Certification (PSE) certification is a mandatory product approval for electrical products in Japan. However, it only applies to products with removable lithium-ion batteries. Since the battery in the Oura Ring is built-in and not user-removable, this certification is not required.
Oura holds the MIC (Ministry of Internal Affairs and Communications) certification, which is Japan's required approval for products with radio technologies. Both the Oura Ring and its charger qualify as radio products under Japanese regulations.