
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.

IMIKI Smart Ring: Your Discreet Digital Companion. Crafted for the modern minimalist, the IMIKI Smart Ring redefines wearable tech with its seamless fusion of elegance and innovation. It combines jewelry-grade elegance (available in gold/silver) with health tech. This discreet finger-worn companion delivers medical-grade 24/7 biometric tracking, monitoring heart rate, body temperature, blood oxygen, sleep patterns and female menstrual period. Beyond being your health coach, its touch-sensitive surface becomes a magic wand for modern life: adjust music volume with a finger swipe, flip eBook pages, or instantly like social content with micro-gestures. Engineered for life's adventures with 5ATM water resistance and a marathon 7-day battery life, this minimalist ring proves big innovations come in small packages. Elevate your everyday efficiency and wellness in silent sophistication with the IMIKI smart ring.

Meet Sense 2—the smartwatch designed to help you stress less, sleep better & live healthier. Get help identifying stress and get the tools to better manage it. Learn more about your sleep and how to improve your rest with detailed nighttime tracking and a unique Sleep Profile. Track key heart-health indicators so you can make more informed wellness decisions. Plus Sense 2 is packed with advanced activity tracking and smartwatch features and includes 6 months of Fitbit Premium Membership1. Fitbit is part of the Google family.
| Pros for Oura - Ring 4 - Refurbished Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 10 - Stealth - (2024) | |||
|---|---|---|---|
| Accuracy | Sleep Tracking, Overall Performance, Battery Life, Comfort, Data Accuracy | There were no pros for this product— | Overall Performance, Battery Life, Sleep Tracking, Ease of use, Features |
| Cons for Oura - Ring 4 - Refurbished Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 10 - Stealth - (2024) | |||
| There were no cons for this product— | Connectivity, Size, Scratch Resistance | There were no cons for this product— | Connectivity, Band Comfort, Screen Size, GPS, App Availability |
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.
Oura 4 does it all !!! Plenty of facts about your body that explain why you act and feel the way you do !! No more guessing and actually predicts what's next !! Very impressed ! Buying my spouse one now !! She was jealous of mine !! Haha !
This review is from Oura - Ring 4 - Refurbished Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 6 - Gold - (2024)
TerryJ Posted
I bought this to track my cardio while playing drums. It’s comfortable, great for sleep tracking and the battery life is fantastic.
StevenC Posted
The set up was easy. I sized my ring finger in store and it was accurate to the product. The information provided by the app is helpful in managing my health and routines. This is a great monitor, not for fitness tracking.
This review is from Oura - Ring 4 - Refurbished Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 6 - Silver - (2024)
user475109 Posted