Search  for anything...
OURA

Oura Ring 4 - Silver - Size 4 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life

  • Based on 348 reviews
Condition: New
Checking for product changes

Notify me when this product is back in stock

$349.00 Why this price?

Buy Now, Pay Later

As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Returnable until Jan 31, 2025

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.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Unavailable
Fulfilled by Amazon
Available payment plans shown during checkout

Recently Viewed

Color: Silver


Size: 4


Features

  • OURA MEMBERSHIP - First month of membership is free with your purchase, $5.99/mo afterwards. Offer available to new members only. 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 30 biometrics, 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.
  • 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.
  • HSA/FSA ELIGIBLE - We can accept HSA or FSA funds for the following: Oura Ring, additional chargers, and shipping.
  • 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 30 biometrics including sleep, readiness, activity, heart health, stress, and women’s health. Oura Ring 4 quietly and comfortably monitors your health and with up to 8 days of battery life — you can forget it’s even on. Sleeker, smarter and more accurate than ever, Oura Ring 4 is made for you. Oura Ring 4 is FSA/HSA Eligible — we can accept FSA or HSA funds for the following: Oura Ring 4, additional chargers, and shipping. IMPORTANT: Size yourself with the Oura Ring 4 Sizing Kit before you buy — Oura Ring 4 is not US standard sizing, and finding the right size will result in the best experience possible. With an Oura Ring 4 sizing kit purchase, a $10 credit will automatically be applied to your Oura Ring 4 at checkout.

Special Feature: Heart Rate Monitor, Activity Tracker, Sleep Monitor


Connectivity Technology: Bluetooth


Wireless Communication Standard: Bluetooth


Battery Cell Composition: Lithium Polymer


Shape: Round


Brand: OURA


Model Name: JZ90-54217-04


Style: Minimalist


Color: Silver


Target Audience: Men


Warranty Type: Standard/Full


Closure Type: Slip On


Water Resistance Level: Water Resistant


Metrics Measured: Optical Heart Rate Sensor, Temperature Sensor, Blood Oxygen Sensor, Accelerometer


Band Material Type: Stainless Steel


Supported Application: Multiple


Case Material Type: Titanium


Water Resistance Depth: 1E+2 Meters


Additional Features: Heart Rate Monitor, Activity Tracker, Sleep Monitor


Display Type: No Display


Battery Cell Type: Lithium Polymer


Wireless Compability: Bluetooth


Connectivity Technology: Bluetooth


Wearable Computer Type: Smart Ring


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


Target Audience: Men


Manufacturer: Oura


Age Range Description: Adult


Model Name: JZ90-54217-04


Model Number: JZ90-54217-04


Brand: OURA


Color: Silver


Shape: Round


Style Name: Minimalist


Band Color: Silver


Compatible Devices: Smartphone


Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

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

    • Best Purchase Ever
Color: Silver Size: 8
Review Image by Azia Mortensen Azia Mortensen
I’ve had watches, Fitbit’s, you name it but this is the best thing I’ve come across so far. The amount of detail and insight I receive into my health is unmatched. I finally feel competitive with myself and want to better my habits based on how my numbers fluctuate. I love that this also gives insight into how my sleep habits are and when to best navigate bedtime based on my habits. I love that it changes and adapts to me and isn’t a one size fits all health approach. Worth every penny for the functionality as well as the sleek design. I initially purchased the 3 and quickly exchanged it for the 4 to rid of the bumps on the inside and it’s so comfortable I forgot I’m wearing it. The charging is so fast, the silver is nice and while has a couple scratches, stays very clean and shiny. ... show more
Reviewed in the United States on December 11, 2024 by Azia Mortensen Azia Mortensen
    • So far so good
Color: Black Size: 12
Purchased this to help learn about my sleeping. The ring is comfortable to wear and shows some good health data. It integrates into the Apple Health app so all of my records can be viewed in one location. The battery life is lasting me about 6 days which is more than enough. The new app is easy to use. My one complaint/concern is the yearly fee for the app. Other than the sleeping data I don’t know if it provides me with any more/better data that my Apple Watch. I will see if I keep the app after the first year. ... show more
Reviewed in the United States on November 28, 2024 by ErIc
    • Pretty neat.
Color: Silver Size: 7
The fitness ring is primarily focused on health monitoring and provides more comprehensive data compared to Apple or Samsung watches. It offers detailed explanations of its various features and adapts its functionality over time based on the duration of wear. While it generally provides accurate readings similar to an Apple Watch, its step tracking feature may differ slightly. The ring’s size may be considered bulky for a wearable device, but it accommodates the intricate sensors and components. It seamlessly syncs with the phone and can store up to a week of data before requiring manual synchronization. The battery life lasts approximately five days before prompting constant charging reminders before bedtime. Although the app offers useful features, it does require a subscription fee for access to more advanced functionalities. Considering the price point of the ring, it would be more reasonable to expect it to be offered at no cost or on a monthly or yearly basis rather than a subscription model. ... show more
Reviewed in the United States on December 5, 2024 by SpunkyD
    • An Excellent Diagnostic Tool
Color: Gold Size: 8
My sleep patterns have been somewhat concerning lately, and I choose not to wear my smart watch to bed. The Oura 4 ring is a great addition to getting information on not only my sleep patterns, but other physiological information. In my case, the ring is combined with my IOS smartphone and smartwatch. The app works well, and the yearly subscription price is a good value. So far, the ring has proven to be durable, accurate, and has not had any scratches or marred surfaces. Overall, a good investment in my health. The preordering of the ring sizer is highly recommended. ... show more
Reviewed in the United States on December 1, 2024 by Steve O
    • Great Ring!
Color: Rose Gold Size: 15
If you owned a generation 3 Oura Ring then your experience won't be much different in my opinion. Other reviewers have said the Gen 4 Ring is more comfortable to wear. That depends. Yes, the sensor bumps inside the old ring are now embedded in the new ring so that provides an added measure of comfort. And since I have really meaty fingers, the new size 15 ring is a much better fit than my previous size 13. That being said, the width and weight makes it no more comfortable to wear all day overall than the previous ring for me personally. I find myself adjusting it on my finger for better comfort several times a day after wearing it for hours. But not a deal breaker by any means. Battery life seems better in the new ring just as advertised. How much better is yet to be determined. I purchased the rose gold. It's stunning! But it scratches very, very easily. If scratches will bother you, I'd advise getting the matte silver or stealth, which I believe might hide any scratches more effectively. I'm much more impressed by the newly revised and reorganized app experience. The new update is awesome and makes the app so much more user friendly! Now if we could only get rid of the 6 dollar monthly subscription fee, everything would be almost perfect! ... show more
Reviewed in the United States on October 25, 2024 by TMac
    • Optimal Oura Ring
Color: Gold Size: 9
Review Image by Paul Powell Paul Powell
Review Image by Paul Powell Paul Powell
As a previous user of another brand of fitness/health tracking wearable, I had no trouble adjusting to the Oura ring and wish I'd made the switch sooner. I like the fit and recommend ordering the size kit before purchasing. It holds a charge well, and the data is easy to navigate using the app. The ring is comfortable and durable. I haven't purchase a cover for it, but it hasn't scratched yet during barbell movements which was something I was concerned about. I most like the detailed sleep data the ring provides as well as monthly cycle tracking. If you enjoy walking or running, it also has a feature to track your route and distance. Highly recommend. ... show more
Reviewed in the United States on November 30, 2024 by Paul Powell Paul Powell
    • Great Concept, But Step Tracking Needs Improvement
Color: Silver Size: 6
I had high hopes for this product since I’m not a fan of wearing a smartwatch. The accompanying app is fantastic, though it's disappointing that a subscription is required. I particularly enjoyed the sleep insights and Oura score—they're well-designed and informative. However, I ran into an issue: I work in an office, and the ring consistently registered my typing as steps. While I understand it's likely due to detecting general movement, it added an extra 3,000 to 5,000 steps per day, which was noticeable when comparing it to my Apple Watch. It's a great concept, but this accuracy issue made it less practical for my daily routine. ... show more
Reviewed in the United States on December 3, 2024 by Amazon Customer
    • Plastic outer
Color: Black Size: 10
Review Image by RICHARD AUBIN RICHARD AUBIN
First day of having the ring it got all scratched up. Buying a protector kind of defeats the purpose of choosing a color. You have to take the protector off in order to charge it as well. I wish they used better material to help prevent nicks and scratches. The data you get is pretty good, but the ring itself could be better and be more sturdy. ... show more
Reviewed in the United States on December 9, 2024 by RICHARD AUBIN RICHARD AUBIN

Can't find a product?

Find it on Amazon first, then paste the link below.