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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

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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 17 Showing 321-340 of 482 reviews
  • Pros mentioned:
    Overall performance

    Amazing

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

    Love it! Don’t think twice about getting it I love it so much I even got my mom one.

    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:
    Sleep tracking

    Oura Ring

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

    Love all the health benefits and what you can integrate with it. Excited to see how my blood work syncs with app

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

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

    Love this ring

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

    I love this ring. Battery is long lasting. I definitely recommend!

    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

  • 10/10

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

    Love the ours ring!! I definitely have trouble navigating the app there’s just so much information and different ways to get to the same place. I do agree that the ring sizers and the rings are sized differently but I was able to make it work

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

    I would recommend this to a friend

  • Great Gift for the Wife

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

    Wife loves it. Everyone comments on the pink. Recommend!

    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:
    Design

    Think pink!

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

    Love this ring. The ceramic pink option is beautiful.

    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

  • Great Purchase!!

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

    I’ve had my ring for about 3 weeks now and I am loving it. It’s still getting use to some of my habits but for the most part it’s been tracking great! I love that it senses your body needs rest or that it’s fighting something and is so accurate on sleep etc. I’m hoping this will help me with my health in 2026! I would definitely buy again!

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

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

    Canton

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

    Works great easy way to follow daily activities and intact

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 15 - Midnight - (2025)

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

    Oura ring

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

    Oura Ring delivers deep insights with sleek comfort

    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:
    Design

    Beautiful ring

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

    Beautiful ring and very functional, I’ll probably get another one for my wife for Christmas.

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

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

    Oura tracker ring

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

    It is a great tracker. I’m very pleased with the way it is tracking my health

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

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

    Nice ring

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

    Best purchase ever. It looks nice and I like the insight

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

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

    Great

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

    Great great great great great great great great great

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

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

    Aakash

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

    Love the oura ring It has exceeded all of my expectations

    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

  • Love the ceramic option

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

    I like the color and it is way more scratch resistant than the gold and rose gold

    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

  • Oring

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

    Love my ring, it helps Meet My fitness goals and keep track of eveyrhing I want to keep track of.

    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

  • Oura Ring

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

    I have only used this product for 30 days. It has been very helpful in picking up a lot of my health habits. I’m curious to see how accurate it is. I’m very happy with it

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

    I would recommend this to a friend

  • Cute color!

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

    I love it and the color is so cute. I wanted something as a tracker for when i play beach volleyball bc my watch can get in the way

    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

  • Life Ring

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

    Definitely can save your life. You can use anytime anywhere

    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

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

    I Love it, more than I expected, I really recommend it

    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
Page 17, Showing 321-340 of 482 reviews
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