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OURA

Oura Ring 4 - Silver - Size 14 - Sleep, Activity, Women’s Health, AI Advisor, Up to 8 Days of Battery Life, Size Before You Buy, Android & iOS Compatible

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Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, Apr 26
Order within 20 hours and 2 minutes
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Style: Metallic


Color: Silver


Size: 14


Features

  • 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
  • OURA MEMBERSHIP - First month of membership is included with purchase, for new members only. Subscription is 5.99/mo afterwards. Membership is tied to your account via the Oura App, not your physical ring
  • 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

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: Proprietary/Custom


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: JZ90-54217-14


Style: Metallic


Operating System: Proprietary/Custom


Additional Features: Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight


GPS Geotagging Functionality: GPS Via Smartphone


Band Material Type: Stainless Steel


Case Material Type: Stainless Steel


Water Resistance Level: Water Resistant


Sport Type: Fitness


Closure Type: Slip On


Human Interface Input: Unknown


Supported Application: Fitness Tracker


Water Resistance Depth: 100 Meters


Supported Satellite Navigation System: GPS


Controller Type: Ring


Metrics Measured: Body Temperature, Menstrual Cycle, Sleep Duration, Stress


Battery Cell Type: Lithium Polymer


Battery Average Life: 5 days


Battery Charge Time: 80 minutes


Connectivity Technology: Bluetooth


Wireless Compability: Bluetooth


Communication Feature: Bluetooth


Item Dimensions: 0.94 x 0.94 x 0.31 inches


Brand: OURA


Model Name: JZ90-54217-14


Target Audience: Unisex Adults


Age Range Description: Adult


Model Number: JZ90-54217-14


Built-In Media: Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide


Wearable Computer Type: Smart Ring


Manufacturer: Oura


Warranty Description: 1 Year Manufacturer


Shape: Round


Style Name: Metallic


Color: Silver


Band Color: Black


Display Type: No Display


Compatible Devices: Smartphone


Compatible Phone Models: Android Devices, iOS Devices


Warranty Type: Standard


Waterproof Rating: IP54


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Apr 26

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

    • Impressive technology in a small, comfortable form factor
Style: Metallic Color: Black Size: 9
We purchased the Oura Oura Ring 4 as a Christmas gift for our 20-year-old son, and it has quickly become one of his favorite gifts. He’s very interested in understanding his body better, and this ring gives him exactly that without being bulky or distracting. The first thing he commented on was how comfortable and lightweight it is. Unlike a smartwatch, he doesn’t feel the need to take it off during the day or while sleeping, which makes it much easier to wear consistently. The sizing kit was definitely helpful, and once the correct size was selected, the fit was spot on. What really stands out is the amount of data and insight the ring provides. He loves being able to monitor things like sleep patterns, activity levels, recovery, and overall wellness in one place. The app presents everything in a clean, easy-to-understand way, making the information useful instead of overwhelming. It’s more about trends and awareness than obsessing over numbers, which I appreciate. Sleep tracking has probably been his favorite feature so far. He’s been genuinely surprised at how detailed the sleep insights are and has already made small adjustments to his routine based on what the ring is showing him. It’s encouraging to see technology used in a way that promotes better habits rather than distractions. Battery life has been solid, and charging is quick and simple. He also likes that it doesn’t constantly buzz or demand attention—it quietly collects data in the background and lets him check it when he wants. Overall, this was a great gift and feels well worth it for someone interested in health, fitness, and self-awareness. If you’re looking for a wearable that focuses more on wellness and less on screens and notifications, the Oura Ring 4 is an excellent option. Our son absolutely loves it, and it’s something he uses every single day. ... show more
Reviewed in the United States on January 3, 2026 by Rob W
    • Great health tracking!
Style: Metallic Color: M - Rose Gold Size: 7
Love the Oura ring is not true to normal ring sizes so definitely use a sizing kit! Becomes comfortable as you wear it an get used to it. I feel like it tracks the heart rate and sleep well but maybe a little less accurate on the activity. Super easy to set up and use the app but does come with a subscription charge. Waterproof I do dishes and shower and everything with it on! But does scratch very easy. ... show more
Reviewed in the United States on September 29, 2025 by Sidney
    • Great purchase! I wish I had gotten it sooner
Style: Metallic Color: M - Brushed Silver Size: 6
First of all: I love the brushed silver finish. It is really cute. I use the ring with two other thin rings covered in zirconia e it looks amazing. But I also do it because that way I feel the ring stays in place more easily. I’m not sure why, because I bought the sizing kit and used the size 6 tester for a few days before ordering, but the ring doesn’t fit quite perfectly, it is looser than the one from the sizing kit, which did fit perfectly. This one is a bit larger. Which worries me is that if I lose weight this ring wont fit at all, because my other fingers are less thin but I have wide knuckles on all my fingers but the ring one (where I use it currently and I find most comfortable for this purpose). Anyways, I have been loving the ring and the app and all the information it provides. I was hesitant to buy the oura ring and thought about it for quite some time (more than a year) because I thought it was kind of redundant having an apple watch and this smart ring, but boy was I wrong! The information it provides is something else, and since I have been focusing on the quality of my sleep and stress management for a while now, this ring (with the subscription) is the perfect tool to do so. I wish I had gotten it sooner! The battery lasts a really long time, for me it has been around one week, but sometimes I charge it a bit while I’m in the shower washing my hair, just because I remove it so I place it in the charger. I was easy to set up and the app is very user friendly. ... show more
Reviewed in the United States on March 12, 2026 by Giovanna V.
    • Wasn’t Sure at First—Now I’m So Glad I Have It
Style: Ceramic Color: Cloud Size: 8
I wasn’t sure I wanted the Oura Ring 4 Ceramic, but just 48 hours in, I’m so glad my husband got this for me for Christmas. It’s already become something I check daily. Comfort & Design: The ring is incredibly comfortable and lightweight. I honestly forget I’m wearing it, even while sleeping. The ceramic finish looks sleek and modern and feels very high-end. Insightful Tracking: The data is fascinating and easy to understand. Sleep, readiness, and activity insights feel meaningful and helpful—not overwhelming. It’s already made me more aware of my sleep quality and recovery. Easy to Wear, Easy to Use: I love that it doesn’t feel bulky like a watch and works seamlessly in the background. The app is intuitive and well designed. Quick Buy-In: I expected this to be something I’d have to “get used to,” but instead I was hooked almost immediately. Within two days, I understood the value. Overall Impression: If you’re on the fence like I was, this might surprise you. Comfortable, insightful, and beautifully designed—it’s a gift I didn’t know I needed but now wouldn’t want to be without. ... show more
Reviewed in the United States on December 30, 2025 by DLynn
    • Perfect Fit & A Thoughtful Way to Gift Health
Style: Sizing Kit Color: Gifting Sizing kit Size: Gifting Sizing Kit
I recently used the Oura Ring 4 Gifting Sizing Kit, and I’m absolutely thrilled with how it went! The sizing kit is such a clever idea—it made finding the right fit so easy and stress-free. I was able to try on different sizes, and the whole process was simple and straightforward. I really appreciated how well-designed and user-friendly the kit was. I also love how thoughtful this kit would be as a gift. The ability to ensure the ring fits perfectly before gifting it is such a nice touch. I highly recommend this sizing kit to anyone who’s thinking about getting the Oura Ring for themselves or as a gift for someone else. It’s definitely a 5-star experience! ... show more
Reviewed in the United States on October 19, 2025 by Tanna Daily

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