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OURA

Oura Ring 4 - Rose Gold - Size 5 - Size Before You Buy

  • Based on 6,485 reviews
Condition: New
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Holiday Deal · 30% off was $499.00

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This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: Only 3 left in stock, order soon!
Fulfilled by Amazon
Arrives Saturday, Dec 13
Order within 3 hours and 26 minutes
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Color: Rose Gold


Size: 5


Features

  • SIZE BEFORE YOU BUY - Oura Ring 4 sizes are different from standard ring sizes. Size yourself with the Oura Ring 4 Sizing Kit. For additional details, see From the manufacturer section below
  • OURA MEMBERSHIP - First month of membership is included with purchase, for new members only. Subscription is 5.99/mo afterwards. Or opt for the annual prepaid option for 69.99. Membership is tied to your account via the Oura App, not your physical ring
  • ACCURACY - SMART SENSING - Oura tracks over 50 health metrics, including sleep, activity, stress, heart health, and womens health metrics. Oura Ring 4 is powered by Smart Sensing, which adapts to you delivering accurate, continuous data, day and night
  • LONG LASTING BATTERY - With up to 8 days of battery life, no screens and no vibrations, Oura Ring 4 allows you to focus on the present. From a workout to a night out youre free to forget its on. Until you start getting compliments.
  • HSA/FSA ELIGIBLE - We can accept HSA or FSA funds for the following: Oura Ring, additional chargers, and shipping.
  • DESIGNED FOR 24/7 WEAR - The updated design of the Oura Ring 4 is more comfortable, fits better than ever, and is water resistant. The first all-titanium smart ring combines exceptional durability with a gentle touch, even for sensitive skin.
  • SYNC WITH YOUR FAVORITE APPS - Compatible with iOS and Android Oura seamlessly integrates with over 40 apps including Apple Health, Google Health Connect, Natural Cycles, Flo, Strava, & more.
  • LOOKING FOR THE BEST HEALTH TRACKER? - Whether youre searching for a sleep ring or fitness ring, Oura Ring 4 is for you this revolutionary smart ring that allows you to discreetly track your sleep, activity, recovery and stress in style.

Description

Introducing Oura Ring 4: the latest evolution of the revolutionary smart ring. Oura Ring 4 brings you closer to what matters most — your health. The updated all-titanium design is powered by Smart Sensing, a new sensing platform that doesn’t just measure your biometrics, it adapts to you, providing insights into over 50 health metrics including sleep, readiness, activity, heart health, stress, metabolic health, and women’s health. Oura Ring quietly and comfortably monitors your health and with 5 to 8 days of battery life — you can forget it’s even on. With multi-ring support, change Oura Ring 4 styles as easily as changing your outfit. If you have two or more Oura Ring 4 styles, you can now switch easily between different finishes in the Oura App. Sleeker, smarter and more accurate than ever, Oura Ring 4 is made for you. Oura Ring is FSA/HSA Eligible — we can accept FSA or HSA funds for the following: Oura Ring, additional chargers, and shipping. IMPORTANT: Size yourself with the Oura Ring Sizing Kit before you buy — Oura Rings are not US standard sizing, and finding the right size will result in the best experience possible. With a sizing kit purchase, a credit will automatically be applied to your Oura Ring at checkout.

Special Feature: Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight


Connectivity Technology: Bluetooth


Wireless Communication Standard: Bluetooth


Battery Cell Composition: Lithium Polymer


GPS: GPS Via Smartphone


Shape: Round


Brand: OURA


Style: Minimalist


Color: Rose Gold


Target Audience: Unisex Adults


Product Dimensions: 0.91 x 0.91 x 0.31 inches


Item Weight: 6.3 ounces


Item model number: JZ90-54219-05


Batteries: 1 Lithium Polymer batteries required. (included)


Connectivity technologies: Bluetooth


GPS: GPS Via Smartphone


Special features: Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight


Other display features: Wireless


Human Interface Input: Buttons


Color: Rose Gold


Whats in the box: Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide


Manufacturer: Oura


Date First Available: October 3, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Dec 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Approve
Color: Silver Size: 10
The fit for this worked out well. I used a sizer at Best Buy. This has been very helpful for me to learn more about my sleeping habits. I’ve been able to make adjustments that have really changed my energy levels. It’s also been very validating on days when I feel exhausted and my ring reflect this back to me. The charge for me is about 3 days. I’m tracking so many interesting things like how caffeine impacts my stress, or reading before bed impacts my sleep. I’m getting clear on my menstrual cycle which has been hard due to my autoimmune disease, It’s expensive and I think I’m getting my moneys worth. ... show more
Reviewed in the United States on November 17, 2025 by Katherine
    • Highly recommend if purchasing an Oura Ring — measure twice, buy once
Color: Sizing Kit Size: 4
If you’re planning to buy the Oura Ring 4, this sizing kit is almost essential. Here’s my straight-talk review: What I liked: The sizing kit gives you multiple trial rings (sizes 4-15) to test your finger and fit. Best Buy +2 Android Authority +2 It helps you understand that Oura’s ring sizing doesn't match standard ring sizes — many users found they needed a different size than their usual jewelry ring. The fit matters a lot: the company says a proper fit leads to better comfort and data accuracy. You typically receive a credit toward your actual ring purchase, so the sizing kit effectively reduces risk. One small caveat: The sizing rings are made of plastic and feel different than the actual titanium ring. Some people notice differences in how the plastic kit fits versus the final product. You’ll need to wear the sizing ring for at least 24 hours (and ideally through normal daily activities) to check comfort, swelling, finger variation. Bottom line: If you’re buying the Oura Ring 4, get the sizing kit first. It takes away a lot of guesswork and prevents the hassle of ordering a ring that’s too loose or too tight. Measure your finger, test it over a day or two, pick the best fit — then buy the actual ring. This way your investment pays off and you get the full benefit of the ring. ... show more
Reviewed in the United States on October 21, 2025 by L. Bell
    • A great compliment to collect and collaborate health information gathered by a smartwatch.
Color: Brushed Silver Size: 11
My husband bought each of us a ring for our birthdays. I was planning to return mine because I have an Apple watch and it seemed redundant. After reading more about the rings features, I decided to use it. It has features that are not available on my watch and gives a more accurate picture of my sleep and activity. It captures apneic events that I was unaware I was having as well as just how little I truly sleep. I have not slept well in more than 13 years, due to spine and shoulder injuries and subsequent surgeries. I never felt my providers believed me that I am unable to sleep for more than 1-2 hrs at a time. I frequently need to get up and walk around, sleep in a recliner or on the floor…. Lack of adequate sleep has taken a toll on my physical and mental wellbeing. Now, I have much more accurate proof of my severity disrupted sleep quality. My watch will record disruptions, but I’m right handed and wear my watch on my left wrist, so it will record me as sleeping because if I’m reading, my left hand is pretty still. This gives a much more accurate picture because I can wear it on may right hand. I think the ring and watch compliment each other in painting a more accurate picture. I would not replace either with just 1 or the other, because some capabilities aren’t available on both. For instance, my watch can detect a hard fall and call 911 if I am unable to confirm that I am ok. Due to spinal nerve damage, I fall frequently and have had some severe injuries, so my watch is vital in that respect. If you are looking for one device that does it all, I am unaware of one. If you are looking for a device to complement and back up the information that is gathered on one device, you cannot go wrong with this ring. I highly recommend a silicone cover for the ring, because it does scratch easily. That being said, my 14 k wedding ring has taken a lot of abuse over the 30 years I’ve worn it, so it could just be that I’m pretty rough on my hands and the loss/decreased (of) sensation in my hands definitely contributes to the scratches. Overall, I really like the features of this ring and that I have a much more accurate picture of how little I sleep, because I’ve always felt that my healthcare providers feel that I have to exaggerate how little I sleep. ... show more
Reviewed in the United States on July 29, 2025 by Not-so-crazy-cat-lady

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