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  • Front. Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 4 - Cloud.
  • 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 dip 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 Cloud - 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 - Cloud - (2025)

Model:
JZ90-57460-04
SKU:
6633791
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 478 reviews

Rating Filter

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 enjoy the product's excellent overall performance, phenomenal sleep tracking, and super comfortable design. They also appreciate its long-lasting battery life, appealing ceramic design, and accurate data, noting its scratch resistance. However, some customers found that the size required an adjustment, and a few mentioned a slight weight on their fingers.

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 18 Showing 341-360 of 478 reviews
  • Pros mentioned:
    Overall performance

    Great product

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

    This product is amazing and literally tracks everything

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 14 - Cloud - (2025)

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

    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. Comfortable. Wear it all the time. Highly recommend

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

    I would recommend this to a friend

  • Color is fabulous!!

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

    Loved the ring and the features. Unfortunately, it fit too big. I got sized but when i received it, I felt it was going to fall 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
  • Pros mentioned:
    Sleep tracking

    Oura ring

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

    I love this ring, I review it in the morning to check my activity and sleep score

    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

  • Patty S

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

    Love the color and the fit and all the great information that I get from this ring.

    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:
    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.

    Satisfied with purchase. Does everything as advertised.

    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:
    Overall performance

    No regrets

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

    Best purchase ever do yourself a favor and buy this

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

    I would recommend this to a friend

  • Loving it

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

    Thanks to the sizing kit I got what I actually needed I love it

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

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

    Good investment

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

    Still gets scratched but the battery issues are better

    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

  • Aura ring

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

    I'm impressed with the ring. It was a gift that I didn't want now I'm happy I have it.

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 10 - 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.

    The Oura ring is incredible! I had originally tried an amazfit tracker but it was not for me. The app is incredible with insights on your sleep and activities throughout the day. It is well worth it. The ceramic is also worth it, no scratches!

    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

  • Helped me out so much

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

    Allowed me to track sleep. Over few weeks learned better habits for me to sleep and feel better. Really durable ceramic.

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 12 - Cloud - (2025)

    I would recommend this to a friend

  • Awesome sleep tracker!

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

    I love this product, Oura Ring is pretty awesome and dependable!

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 13 - Cloud - (2025)

    I would recommend this to a friend

  • Oura 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.

    Highly recommend this ring if you are looking to get key insights about your health

    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
  • Cons mentioned:
    Size

    Love the Ceramic

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

    So far enjoying my ring! It’s a bit bulky but you get used to 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

    Good Insights

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

    Works great. Interesting to see the different scores

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

    Fits well and is easy to set up. App is user friendly.

    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

  • Very informative!

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

    I would recommend it to anybod, especially to those who are interested in their bodies.

    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 gift idea

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

    The ring works great and has good information. It was a perfect gift for active people.

    This review is from Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 8 - 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.

    My wife loves it and all the features it has she also loves the super cheap subscription honestly would 100% recommend it

    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
Page 18, Showing 341-360 of 478 reviews
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