Oura Ring 4 - Silver - Size 8 - Sleep, Activity, Women’s Health, AI Advisor, Up to 8 Days of Battery Life, Size Before You Buy, Android & iOS Compatible.

About this item

1. ACCURACY - SMART SENSING - Oura tracks over 50 health metrics, including sleep, activity, stress, heart health, and women’s health metrics. Oura Ring 4 is powered by Smart Sensing, which adapts to you — delivering accurate, continuous data, day and night
2. ACCURATE SIZING ESSENTIAL - Oura Ring 4 uses unique sizing different from standard jewelry rings; use the Oura Ring 4 Sizing Kit to find your perfect fit before purchasing
3. LONG LASTING 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
4. OURA MEMBERSHIP - First month of membership is included with purchase, for new members only. Subscription is 5.99/mo afterwards. Membership is tied to your account via the Oura App, not your physical ring
5. HSA/FSA ELIGIBLE - We can accept HSA or FSA funds for the following: Oura Ring, additional chargers, and shipping
6. DESIGNED FOR 24/7 WEAR - The updated design of the 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

🔍 What it tracks

1. 😴 Sleep quality (main strength)
2. ❤️ Heart rate & heart health
3. 🌡️ Body temperature
4. 🧠 Stress & recovery level
5. 🚶 Activity & calories
6. 🩸 Blood oxygen (in newer models)

👉 It tracks 50+ health metrics continuously day and night

⚙️ How it works (simple explanation)

Inside the ring:

1. Tiny sensors (like hospital-grade light sensors)
2. Infrared LEDs → measure blood flow
3. Temperature sensors → detect body changes
4. Motion sensors → track activity

📱 All data goes to your phone → app gives you:

1. Sleep score
2. Readiness score
3. Activity score

👉 Basically: it tells you

“Should you rest today or push harder?”

💰 Why is it so expensive?

Now the big question 👇

1. 🧠 Advanced health technology

It’s not just jewelry — it’s:

1. Medical-level sensors
2. AI-based analysis
3. Personalized insights

👉 You’re paying for data + intelligence, not just hardware

2. 🛠️ Premium materials

1. Titanium body (light + strong)
2. Waterproof
3. No screen (so it looks like normal ring)

👉 It’s designed to be worn 24/7 comfortably