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Oura Ring 4 - Brushed Silver - Size 4 - Size Before You Buy

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$399.00 Why this price?

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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Mar 16
Order within 23 hours and 35 minutes
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Style: Metallic


Color: Brushed Silver


Size: 4


Features

  • 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

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.

Operating System: Sistema operativo proprietario


Memory Storage Capacity: 1 MB


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


Model Name: Oura Ring 4 - Brushed Silver - Size 4


Product Dimensions: 1.02 x 1.02 x 0.31 inches


Item Weight: 6.6 ounces


Item model number: JZ90-54220-04


Batteries: 1 Lithium Polymer batteries required. (included)


Date First Available: October 3, 2024


Manufacturer: Oura


Memory Storage Capacity: 1 MB


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Mar 16

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.

Top Amazon Reviews


  • Oura Ring 4
Style: Metallic Color: Brushed Silver Size: 13
Love the information the ring provides, it is beneficial in my everyday life.
Reviewed in the United States on January 17, 2025 by ehoff2

  • Love, Love, Love!!
Style: Metallic Color: Brushed Silver Size: 6
I’ve had the Oura ring for almost a year now and would recommend if you’re looking for a wearable that balances tracking your sleep & recovery while also looking minimal. In the beginning, it took some time getting used to having it on my finger but after a month of wearing it consistently, I barely notice it and really love how simple and sleek it looks. It also charges very quickly, so if battery life is a concern, I’d say there are few moments where I am without it. I was initially drawn to the Oura ring as I didn’t want another screen in my life, and I find that it meets the exact criteria I was looking for. I have heard that its fitness tracking isn’t the most accurate in terms of tracking your calories burned or steps walked, but I don’t really use it so much for those purposes. If fitness tracking is critical, I’d do some more research on all the options available. However, if you’re more concerned about sleep, recovery, and stress metrics, I would say it does a great job at monitoring. ... show more
Reviewed in the United States on December 19, 2025 by Erika

  • Good looking brushed surface
Style: Metallic Color: Brushed Silver Size: 15
It is much better looking than the picture
Reviewed in the United States on October 22, 2024 by AC

  • Amazing health tracking
Style: Metallic Color: Brushed Silver Size: 8
I love my Oura ring! It reminds me to get up and move!!! It tracks all of my health habits.
Reviewed in the United States on February 28, 2026 by Sharon Dragovich

  • Love my Oura!
Style: Metallic Color: Brushed Silver Size: 11
Love my Oura ring. I’ve had a great experience with it! I tried the ring at Best Buy for selecting a size and the fit was pretty good. Sometimes feel looser than other times, but that’s just fluid fluctuations. It does scratch somewhat easily, but still looks pretty good after 3 months, you just need to be careful. Water resistance and durability are pretty good, taken it to the beach, shower, gym, no issues. Setting up is easy on an iPhone. ... show more
Reviewed in the United States on February 9, 2026 by Renier Velez-cruz

  • Ours ring
Style: Metallic Color: Brushed Silver Size: 5
Runs small you must order sizing kit first!
Reviewed in the United States on December 29, 2025 by Mike D.

  • Sleepless in Hernando
Style: Metallic Color: Brushed Silver Size: 10
I am getting lots of information about my sleeping habits from this ring. Love it!
Reviewed in the United States on February 28, 2026 by RBHanna

  • Very happy that i switched to this health and fitness monitoring device!
Style: Metallic Color: Brushed Silver Size: 14
Very pleased with my new Oura 4 ring. Yes it's a little pricey compared to some other fitness monitoring options out there, but the amount of information that comes from wearing this ring is phenomenal. The UI team at Oura does a great job of monitoring user suggestions and comments and reacting with improvements to the product. ... show more
Reviewed in the United States on March 9, 2025 by MRM

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