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  • Front. Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 4 - Petal.
  • Size Before You Buy Oura Ring 4 Ceramic Oura Ring 4 Ceramic sizes are different than Gen3 and standard ring sizes
  • Size Before You Buy Oura Ring 4 Ceramic 1. Purchase the Oura Ring 4 Sizing Kit 2. Purchase your Oura Ring 4 Ceramic after learning your size 3. New Oura Members get one month free, then it's $5.99/mo. Receive a $10 Best Buy gift card to use towards Oura Ring 4 Ceramic with purchase of sizing kit
  • Track it all with Oura Membership - Sleep - Activity - Metabolic Health - Stress - Heart Health - Women's Health 9:41 OURA 88 Readiness 84 Sleep 91 Activity 6 Cycle day A great night's sleep can boost your readiness. If there are any challenges on your to-do list, today could be the day to tackle them! Go get 'em! New Oura Members get one month free, then it's $5.99/mo.
  • - Incredible accuracy powered by Smart Sensing - Get a holistic view of your health - Comfortable for 24/7 wear - Recessed sensors you can barely feel - High performance ceramic - 5 to 8 days of battery life - Water resistant up to 100m - Rising heart health, with a din in stress management
  • HSA/FSA Eligible Oura Ring is eligible for reimbursement with FSA and HSA. Employer or provider plans may vary. Check your administrator's coverage.
  • Over one million members 86% saw an improvement in their sleep quality* 88% saw an improvement in overall health* First month of Oura Membership is free, then $5.99 per month. * Based on a survey with 699 adults who used Oura Ring.
  • What's in the Box - Oura Ring 4 Ceramic - USB Cable - Charger
  • All-Ceramic Exterior Titanium Interior Up to 8 Day Battery Life Temperature Sensing Research Grade Heart Rate & SP02 Sensors for Pinpoint Accuracy
  • Introducing Oura Ring 4 video 0 minutes 39 seconds
  • Oura Ring 4 Ceramic Petal - 360 View video 0 minutes 06 seconds
  • How to find your Oura Ring 4 size with sizing kit video 1 minutes 02 seconds

Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 4 - Petal - (2025)

Model:
JZ90-57459-04
SKU:
6633656
Highly rated by customers for:
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Customer reviews

Rating 4.7 out of 5 stars with 482 reviews

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Rating by feature

  • Battery Life

    Rating 4.8 out of 5 stars

  • Durability

    Rating 4.8 out of 5 stars

  • Comfort

    Rating 4.7 out of 5 stars

Pros mentioned filter

Cons mentioned filter

92%would recommend to a friend

Customers are saying

Customers have good things to say about the product's overall performance, with many finding its sleep tracking phenomenal and its comfort super comfortable. They also appreciate its long-lasting battery life, appealing ceramic design, and accurate data. While some users noted that the size took a little adjusting to and that there is a slight weight on the fingers, these observations do not detract significantly from the positive experience.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 14 Showing 261-280 of 482 reviews
  • Pros mentioned:
    Sleep tracking

    Ceramic ring

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    Posted . Owned for 3 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Love the health knowledge that is available. Question the durability of the ceramic style. Still trying to understand all the information available.

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 7 - Petal - (2025)

    I would recommend this to a friend
  • Pros mentioned:
    Sleep tracking

    Wife loves it!

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Wife loves it! It helps her track all the health and sleep numbers she was curious about.

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 9 - Petal - (2025)

    I would recommend this to a friend

  • Love it

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Love it. Would highly recommend. The Color is beautiful..

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 9 - Tide - (2025)

    I would recommend this to a friend
  • Pros mentioned:
    Sleep tracking

    Great ring

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works exceptionally. Measures sleep well and all detects sport.

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 10 - Midnight - (2025)

    I would recommend this to a friend

  • Peace of mind

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    Posted . Owned for 3 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    With all the features that this ring gives it gives my daughter peace of mind on being able to track certain things that are essential to her health.

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 9 - Petal - (2025)

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Oura ring 4 is great!

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great product! it replaced my other products used to track sleep, exercise, etc.

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 7 - Petal - (2025)

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Oura review

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I've owned the ring for a month. It's great for monitoring my sleep patterns, hourly stress levels, heart rate, and exercise levels. I typically charge it about once a week.

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 9 - Midnight - (2025)

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Review

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    Posted . Owned for 3 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great gift, easy to set up. Does all that it says it will do.

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 7 - Midnight - (2025)

    I would recommend this to a friend
  • Pros mentioned:
    Comfort

    Oura Ring

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Love the ceramic, it is light weight and easy to wear.

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 9 - Cloud - (2025)

    I would recommend this to a friend
  • Pros mentioned:
    Sleep tracking

    Must have!!

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Very useful. Love using it to track my sleep!! It also tracks my stress levels which is the main reason I got it.

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 8 - Petal - (2025)

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Oura Ring

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great purchase. Looks good too. The service was good, helpful on making decisions and proving valuable feedback.

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 7 - Midnight - (2025)

    I would recommend this to a friend
  • Pros mentioned:
    Design

    Love my Oura Ceramic Ring 4

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I like the health features. I’m impressed by the design and color of the ceramic ring. Functional as well as fine jewelry appearance

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 8 - Cloud - (2025)

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Husband/Dad

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Learning the ring is fun and holds charge well, hope it lasts for years.

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 11 - Midnight - (2025)

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance
    Best Buy Employee

    Loving it

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    Best Buy Employee
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    [Employee of bestbuy] The oura ring is an excellent way to learn about your body.

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 7 - Petal - (2025)

    I would recommend this to a friend

  • Happy with purchase!

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    So far I’m loving my Oura ring. I wanted it to get some feedback on sleep and other markers of longevity. It takes a few weeks for it to collect data and now I’m starting to get some good feedback! I also love the pink ceramic and have gotten some complements on it!

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 11 - Petal - (2025)

    I would recommend this to a friend
  • Pros mentioned:
    Sleep tracking

    Sleep

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I have enjoyed most the feature for sleeping. I love being able to see how long I slept and how deep.

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 9 - Cloud - (2025)

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Excellent tools for health

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    excellent prouct and good gadge, good price and improve to care you health

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 8 - Petal - (2025)

    I would recommend this to a friend

  • RECOMENDADO

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    Posted . Owned for 3 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    PERFECTO, UN EXCELENTE PRODUCTO. EL COLOR T Y LA CERAMICA PRECIOSO

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 7 - Midnight - (2025)

    I would recommend this to a friend

  • ring oura

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    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great and sleek nice looking tracks everything easy to use stylish with any type of clothing

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 6 - Petal - (2025)

    I would recommend this to a friend
  • Pros mentioned:
    Sleep tracking

    A Woman's Best Friend

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    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great product for my wife to track her sleep and menstrual cycles

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 6 - Petal - (2025)

    I would recommend this to a friend
Page 14, Showing 261-280 of 482 reviews
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