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  • Front. Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 7 - Midnight.
  • 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 - Rising heart health, with a dip in stress management - 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
  • 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 Midnight - 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 7 - Midnight - (2025)

Model:
JZ90-57455-07
SKU:
6633642
Highly rated by customers for:
$399.00
Save $100
The comparable value is $499.00

Customer reviews

Rating 4.7 out of 5 stars with 483 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 love the overall performance and phenomenal sleep tracking capabilities of this ring. Users frequently highlight its comfortable fit, long-lasting battery life, and sleek, scratch-resistant ceramic design. While some individuals noted that it takes a little time to adjust to the size and slight weight on the finger, the general consensus remains highly positive.

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 21 Showing 401-420 of 483 reviews

  • Looks great!

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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 ceramic! Only downside for me is the monthly subscription.

    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

  • Petal oura ring

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

    This is a wonderful product! It helps me track my heath and I love it because it is preventative. It’s a great tracker and keeps you accountable, unlike other smart health devices. Other than it being a bit thick sometimes, I love this product!

    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

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

    Very easy to use. Love how it monitors my sleeping pattern.

    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

  • Love itt!!

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

    I got it, and it didn't fit well, and when I wanted to change size I got no complain.

    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

  • The healthy option

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

    Excited this ring is helping me pay attention to my health!

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

    I would recommend this to a friend

  • Useful Tool for Monitoring My Health

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

    I very much appreciate enjoying my Oura ring! The information provided to me will continue to be useful for my health.

    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

  • 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.

    I am in love with MY RING. It serves the purpose that I purchase it for

    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

  • Great purchased

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

    It was great, perfect fit, and everything. The only downside to the O-ring is that you have to pay for a membership, but if you’re OK with that, then it’s a great fit for you.

    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

  • I like it Don’t 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.

    I find that wearing it on my pointer finger is best for comfortable the color is cute, it’s bulky. I charge my ring every other day I’m very active so I give it it a big thumbs up for wellness.

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

    No, I would not recommend this to a friend

  • Great addition to my health portfolio

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

    Loving all of the benefits. I don’t like wearing my Apple Watch to bed and certain other scenarios.

    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
  • Cons mentioned:
    Size

    OK for health monitoring not so much for activity

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

    It worked well for health monitoring. Not very good with activity tracking. Pretty bulky on the small hand.

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

    No, I would not recommend this to a friend

  • 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.

    Super satisfied, fit and color are excellent. App is working out great as well.

    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

  • Lots of intel

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

    I enjoy all my stats that I get from this device. It is small and doesn’t 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

  • Oura is the best!

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

    Just Beautiful and I love my Oura ring. This is just great color and love the ceramic. Buy one,

    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

  • Love it

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

    Love my ring tells me when I’m getting sick and makes it so easy to use

    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

  • Best gift!

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

    Amazing gift and I my husband enjoys it and wears it daily.

    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

  • Oura ring

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

    great ring. I enjoy all that it tracks. Every morning I check my sleep pattern

    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

  • Great Product

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

    The ring does everything as advertised. The app is simple, clean, and user friendly.

    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

  • Perfect!

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

    Sizing is perfect and it's been very helpful for monitoring everything I was looking into it for.

    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

  • Ceramic model

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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 with accurate measurements. Sizing in teg store was very helpful.

    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
Page 21, Showing 401-420 of 483 reviews
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