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  • Front. Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 10 - 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 10 - Petal - (2025)

Model:
JZ90-57459-10
SKU:
12558392
Highly rated by customers for:
$499.99
Save $104.49
The comparable value is $604.48

Customer reviews

Rating 4.7 out of 5 stars with 473 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 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 13 Showing 241-260 of 473 reviews
  • Pros mentioned:
    Overall performance

    Amazjng

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

    Best smart accessory. I have ever owned way better than the watches.

    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

    cool piece of tech

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

    loving this ring! I use it everyday and the sleep data is really neat. has a feature to indicate if you are starting to get sick which is accurate.

    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

    Great product

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

    Great product would recomend it… also great present

    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

    Oura Ring for the win!!!

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

    My wife loves her Oura Ring, it’s a great accessory along with her Apple Watch to help give her some insight on her health. She loves the color and always gets compliments on it while at work or out an about.

    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
  • Pros mentioned:
    Sleep tracking

    Love my 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.

    Love it. Really keeps me on track. Helps with weight loss and keeping active. Love that it monitors my sleep and heart beat. It also will help to keep track of you menstrual cycle.

    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

    ceramic oura, great value

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

    great health tracker, got this for a friend and they love it! use the sizing kit first to get your size. app requires subscription after trial

    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

    Great Ring

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

    This was a great purchase. I love all the features and the fact that I don't have to charge it daily. Goodbye apple watch.,

    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

  • Sapphire blue Oura

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

    Love my Oura ring! I think its pretty much on point with my day to day.

    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

    Best Purchase!

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

    This ring is life changing!! Love that it tracks my sleep and steps.

    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

    4.5 / 5

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

    Purchased for myself, this is the color my wife likes on me. I ended up returning for the stealth color, a little less flashy for my liking. Overall great product, I would recommend !

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

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

    The Magic Ring

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

    I purchased this for my wife. She loves it - the app is easy and the ring tracks just about everything related to major health concerns. Allen

    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

  • 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

    Great product!

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

    Awesome! Everything you have heard and more! Wife loves it and wears it daily. Perfect level of interaction and motivation. Highly recommend!

    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, Weight

    Too heavy

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

    The concept of the ring great. Unfortunately, I had to return it. The ring was in the way of working out ( holding kettlebells and/or dumbbells) and it was very heavy on my pointer finger

    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

    awsome

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

    this was purchased as a gift, my daughter loves it. she has has other brands of this ring, but this sounds like this one is much better...

    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

    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
  • 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
Page 13, Showing 241-260 of 473 reviews
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