Oura Ring 4 Ceramic, Midnight Blue, Size 15, Smart Wearable, Sleep, Fitness & Heart Rate Tracker, 8-Day Battery (Size Before You Buy)
Oura Ring 4 Ceramic, Midnight Blue, Size 15, Smart Wearable, Sleep, Fitness & Heart Rate Tracker, 8-Day Battery (Size Before You Buy)
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Oura Ring 4 Ceramic, Midnight Blue, Size 15, Smart Wearable, Sleep, Fitness & Heart Rate Tracker, 8-Day Battery (Size Before You Buy)

|136 ratings
Oura Ring 4 Ceramic, Midnight Blue, Size 15, Smart Wearable, Sleep, Fitness & Heart Rate Tracker, 8-Day Battery (Size Before You Buy)OR4 CERAM MID 15Oura Ring 4 Ceramic Cloud Size 8Oura Ring 4 Ceramic Petal Size 4Oura Ring 4 Ceramic Tide Size 14Oura Ring 4 Ceramic Cloud Size 15Oura Ring 4 Ceramic Tide Size 4Oura Ring 4 Ceramic Petal Size 6OR4 CERAM MID 11OR4 CERAM MID 12Oura Ring 4 Ceramic Tide Size 12Oura Ring 4 Ceramic Cloud Size 13OR4 CERAM MID 13Oura Ring 4 Ceramic Tide Size 9OR4 CERAM MID 9OR4 CERAM MID 6Oura Ring 4 Ceramic Cloud Size 14OR4 CERAM MID 8Oura Ring 4 Ceramic Cloud Size 11OR4 CERAM MID 5Oura Ring 4 Ceramic Tide Size 7Oura Ring 4 Ceramic Petal Size 14Oura Ring 4 Ceramic Cloud Size 10Oura Ring 4 Ceramic Cloud Size 4Oura Ring 4 Ceramic Cloud Size 7Oura Ring 4 Ceramic Tide Size 15OR4 CERAM MID 7OR4 CERAM MID 14Oura Ring 4 Ceramic Tide Size 13Oura Ring 4 Ceramic Petal Size 12Oura Ring 4 Ceramic Cloud Size 9Oura Ring 4 Ceramic Petal Size 13OR4 CERAM MID 10OR4 CERAM MID 4Oura Ring 4 Ceramic Tide Size 10Oura Ring 4 Ceramic Petal Size 15
Size15
Actual ColorMidnight

Key item features

  • SIZE BEFORE YOU BUY: Oura Ring sizes differ from standard ring sizes - use the Oura Ring 4 Sizing Kit to find your correct fit
  • OURA MEMBERSHIP: Your first month of membership is included with purchase (for new members only)
  • SUBSCRIPTION: Continue with a $5.99/month plan or choose the annual prepaid option for $69.99 - Membership is linked to your Oura App account, not the physical ring
  • HEALTH TRACKING: Tracks over 50 metrics, including sleep, activity, stress, heart health, and women’s health metrics
  • SMART SENSING: Adapts to you and delivers accurate, continuous data day and night
  • BATTERY LIFE: Lasts 5-8 days* on a single charge
  • DESIGNED FOR 24/7 WEAR: Oura Ring 4’s updated design is more comfortable, fits better than ever, and is water resistant
  • POLISHING PAD: Keep your Oura Ring 4 Ceramic looking like new with the Ceramic Polishing Pad, redeemable once you sync your ring in the Oura App
  • SYNC WITH YOUR FAVORITE APPS: Compatible with iOS and Android — Oura seamlessly integrates with over 40 apps including Apple Health, Google Health Connect, Natural Cycles, Flo, Strava, & more
  • HSA/FSA ELIGIBLE: We can accept HSA or FSA funds for the following: Oura Ring, additional chargers, and shipping
  • LOOKING FOR THE BEST HEALTH TRACKER: Whether you’re searching for a sleep ring or fitness ring, Oura Ring is for you— this revolutionary smart ring that allows you to discreetly track your sleep, activity, recovery and stress - in style
  • Finish: Midnight Blue
  • Size: 15

About this item

Product details

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Customer ratings & reviews

4.4 out of 5 stars
stars
136 ratings24 reviews
How item rating is calculated
  1. 5 stars77% (105)
  2. 4 stars8% (11)
  3. 3 stars3% (4)
  4. 2 stars2% (3)
  5. 1 star10% (13)
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
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Showing 1-3 of 24 reviews

Jul 11, 2026
Reviewer name: JustStormy
Item details
Size: 9
Color: Tide
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great tool on your finger!

I got this during an exceptional Walmart deal. It's beautiful…it's waterproof. And the data and insights that I'm getting from the app are just incredible and well above what I get from my Fitbit and Apple health! Really awesome purchase I'm glad that I got it!

Helpful?72PQ7V5QFAG019680319287
Jun 12, 2026
Reviewer name: Teresa
Item details
Size: 9
Color: Petal
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

This is my second Oura ring. It is a fabulous product for tracking your health and is comfortable to wear and aesthetically pleasing. I highly recommend!

Helpful?72PQ7V5QFAG019680319287
Aug 11, 2026
Reviewer name: Breonna
Item details
Size: 9
Color: Tide
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Love my ring! It has been amazing for tracking my sleep and readiness. I feel fully prepared going into the day after checking my scores. It is very durable and easy to clean. I've also dropped it a few times and haven't had any problems or scratches. I would highly recommend!

Helpful?72PQ7V5QFAG019680319287
Current price is $399.00
Price when purchased online
  • Free shipping
  • Free 30-day returns
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