Oura - Ring 4 - Refurbished Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 9 - Silver - (2024)
Customers are saying
Customers value the product's sleep tracking capabilities, with many appreciating its detailed monitoring. They also find the product to be accurate and comfortable, with some users noting its pleasant wearability.
Oura Ring 4 Refurbished
Same functionality, same beautiful design, more savings. This certified refurbished Oura Ring 4 is in excellent condition and has only minor cosmetic blemishes. It has been properly reset, cleaned, and packaged with all parts and accessories. Backed by a 90 day warranty.
Oura Membership
First month of membership is on us with your purchase, $5.99/mo afterwards. Offer available to new members only. Take advantage of the annual prepaid option for $69.99. Membership is tied to your account accessible via the Oura App, not your physical ring.
Size Before You Buy
Order an Oura Ring 4 Sizing Kit, or visit a Best Buy store, to find your optimal size, then return to BestBuy.com to buy your Oura Ring 4.
Accuracy - Smart Sensing
Oura tracks over 30 biometrics, including sleep, activity, stress, heart health, and women’s health metrics. Oura Ring 4 is powered by Smart Sensing, which adapts to your unique finger and activity — delivering accurate, continuous data, day and night.
Battery
With up to 8 days* of battery life, no screens and no vibrations, Oura Ring 4 allows you to focus on the present. From a workout to a night out — you’re free to forget it’s on. Until you start getting compliments.
Designed For 24/7 Wear
The updated design of Oura Ring 4 is more comfortable, fits better than ever, and is water resistant. The first all-titanium smart ring combines exceptional durability with a gentle touch, even for sensitive skin.
Sleep
Get the best sleep of your life, and then some. Wake up to in-depth sleep analysis, so you can improve your habits and transform how you feel. Oura provides insights into your sleep staging throughout the night, blood oxygen levels, HRV and nighttime heart rate.
Readiness
Know when to push it and when to take it easy with the Oura Readiness Score. It takes into consideration over 30 different body signals — including temperature, heart rate, HRV, and sleep — to tell you how ready you are for the day ahead.
Activity
Whether you're running a marathon or running errands, Oura tracks your daily activity, steps, calories burned and workouts while helping you strike a balance between movement and recovery.
Metabolic Health
Learn how to fuel your wellbeing. See a nutritional breakdown of your meals, understand your meal timing and understand how what you eat impacts your holistic health.
Heart Health
From monitoring your daily heart rate and HRV to discovering your Cardiovascular Age and Cardio Capacity, Oura helps you take care of one of the key indicators of your overall health — your heart.
Women's Health
Your cycle impacts your mood, sleep, activity and more, every day. Oura helps you understand how your cycle affects your body, so you can make better, informed decisions about your holistic health. Track the changes in your body throughout your cycle and predict your period up to 30 days in advance.
Stress
Oura will help you identify signs of stress and understand how well your body handles it. You'll know when you need to incorporate more self-care practices and how to recover from long term stressors.
Stress Resilience
Stress Resilience visualizes how well your body withstands stress over time and helps you build resilience to get through life’s challenges. A healthy amount of stress, sleep, and recovery keeps you prepared for whatever comes your way.
HSA/FSA Compatibility
You may be eligible for reimbursement on your Oura Ring purchase. You can submit your Best Buy confirmation email to your FSA or HSA provider as proof of purchase.
App Compatibility
Automatically sync your health and workout data from your favorite apps through Apple Health, Google Fit, Health Connect, Strava, and Natural Cycles.
iPhone and Apple Watch Compatibility
Get your Oura data at a glance from your iPhone or Apple Watch with iOS widgets and Apple Watch complications. You can also access a companion version of the Oura App on your Apple Watch.
Android Compatibility
The award-winning Oura App is compatible on Android devices running Android 8.0 and higher with Google Play services. The device must also support Bluetooth 4.0.
Language Availability
iOS and Android apps available in English, Finnish, Japanese, German, French, Spanish, Italian, Norwegian, Danish, and Swedish. Supports metric and imperial units of measurement.
- Operating System CompatibilityApple iOS, AndroidBuilt-in Storage0 gigabytesMetrics MeasuredActivity vs. inactivity, Blood oxygen, Hours slept, Calories burned, Resting heart rateProtective QualitiesWater resistant, Dust resistantMaximum Depth of Water Resistance328 feet
Reviews
Rating 4.9 out of 5 stars with 13 reviews
- Sleep Tracking (5)
- Accuracy (3)
- Comfort (3)
Customer Images
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.
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THIS ITEM IS REFURBISHED Oura Ring 4 brings you closer to what matters most — your health. With an updated all-titanium design, this smart ring features Smart Sensing, a new sensing platform that doesn’t just measure your biometrics but also adapts to you. It provides insights into over 30 biometrics including sleep, readiness, activity, heart health, stress, metabolic health and women’s health.
Oura Ring 4 brings you closer to what matters most — your health. With an updated all-titanium design, this smart ring features Smart Sensing, a new sensing platform that doesn’t just measure your biometrics but also adapts to you. It provides insights into over 50 biometrics including sleep, readiness, activity, heart health, stress, metabolic health and women’s health.
Oura Ring 4 Ceramic is a modern expression of our revolutionary smart ring technology that blends refined elegance with everyday durability. The high-performance ceramic exterior is designed to keep up with you and all that you do. The Ceramic Collection is available in four unique colors: Midnight, Petal, Tide and Cloud. Each new color is built to accent your style and personality. This colorful new take comes with the same cutting-edge technology of Oura Ring 4. Track over 50 health metrics and get personalized insights into your sleep, activity, readiness, stress, heart health, metabolic health, women's health and more. It is built around a breakthrough sensing technology, Smart Sensing, which adapts to your finger to deliver accurate, continuous data. With 5-8 days of battery life, you'll see a complete picture of your health. It's designed with recessed sensors on the interior, making it comfortable and gentle, even on sensitive skin. Oura Ring 4 Ceramic comes in sizes 4-15 and four stunning finishes to fit your style and your finger, effortlessly. Keep your Oura Ring 4 Ceramic looking like new with the Ceramic Polishing Pad. Once you activate your Oura Ring 4 Ceramic, you’ll receive an in-app message and email with instructions to redeem your free Ceramic Polishing Pad. Due to the hardness of the zirconia ceramic, it can take on the color of softer metals, like a dumbbell or cookware. Over time, you may notice grey marks on your Oura Ring 4 Ceramic. Rest assured, it's not damaged — it's evidence of a metal transfer and easy to remove with proper cleaning. Use caution when handling metal objects and consider removing your Oura Ring for some activities. The Oura Ring 4 Ceramic Polishing Pad is your partner in keeping your ring in top condition.
Oura Ring 4 brings you closer to what matters most — your health. With an updated all-titanium design, this smart ring features Smart Sensing, a new sensing platform that doesn’t just measure your biometrics but also adapts to you. It provides insights into over 50 biometrics including sleep, readiness, activity, heart health, stress, metabolic health and women’s health.
| Pros for Oura - Ring 4 - Refurbished Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 9 - Silver - (2024) | |||
|---|---|---|---|
| Sleep Tracking, Comfort, Accuracy | There were no pros for this product— | Overall Performance, Sleep Tracking, Comfort, Battery Life, Design | Sleep Tracking, Overall Performance, Comfort, Battery Life, Design |
| Cons for Oura - Ring 4 - Refurbished Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 9 - Silver - (2024) | |||
| There were no cons for this product— | There were no cons for this product— | Size, Weight | Size, Scratch Resistance, Connectivity |
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