--- product_id: 723716256 title: "OURA Ring 4 - Silver - Size 8 - Smart Ring | Size First Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life" brand: "oura" price: "€ 556.26" currency: EUR in_stock: true reviews_count: 6 category: "Oura" url: https://www.desertcart.fr/products/723716256-oura-ring-4-silver-size-8-smart-ring-size-first store_origin: FR region: France --- # 8 days battery life Full titanium durability 30+ biometric sensors OURA Ring 4 - Silver - Size 8 - Smart Ring | Size First Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life **Brand:** oura **Price:** € 556.26 **Availability:** ✅ In Stock ## Summary > 💍 Own your health, silently and stylishly. ## Quick Answers - **What is this?** OURA Ring 4 - Silver - Size 8 - Smart Ring | Size First Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life by oura - **How much does it cost?** € 556.26 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/723716256-oura-ring-4-silver-size-8-smart-ring-size-first) ## Best For - oura enthusiasts ## Why This Product - Trusted oura brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless 8-Day Power:** Stay unplugged and unstoppable with a week-plus battery life that keeps up with your busiest days and wildest nights. - • **Precision Health Insights:** Unlock over 30 continuous biometric metrics—from heart rate variability to sleep quality—powered by adaptive Smart Sensing tech. - • **Seamless 24/7 Wearability:** Water-resistant and ergonomically crafted for all-day, every-day wear—track your health without missing a beat or a moment. - • **Exclusive Membership Perks:** Get your first month free and dive into personalized health analytics with the Oura Membership, designed for the data-driven professional. - • **Titanium Tough, Feather Light:** Experience unmatched durability and comfort with a sleek, all-titanium design that’s built to last and gentle on skin. ## Overview The Oura Ring 4 is a cutting-edge smart ring crafted from full titanium, offering up to 8 days of battery life and tracking over 30 biometric signals including sleep, heart rate, and stress. Designed for continuous 24/7 wear with water resistance and a comfortable fit, it delivers precise health insights via the Oura App. A sizing kit ensures the perfect fit, and a membership subscription unlocks advanced analytics, making it the ultimate discreet wellness companion for professionals who demand accuracy and style. ## Description Product Description Size before you buy Easy to wear, everywhere No interruptions Built to last Accurate by design The Oura Ring 4 Sizing Kit is the best way to ensure an accurate experience. Sleek and comfortable, Oura Ring seamlessly fits into your life from a workout to a night out. Stay present without notifications on your wrist. Check the Oura App when you want to. Oura Ring 4 is fully titanium: one of the strongest metals on Earth. Durable, lightweight, water-resistant. Oura Ring 4 delivers incredibly accurate data and personalised health insights to help you be at your best. Fully Titanium Oura Ring 4 is fully titanium: one of the strongest metals on earth. Durable, lightweight, water resistant. Fully Titanium Oura Ring 4 is fully titanium: one of the strongest metals on earth. Durable, lightweight, water resistant. Smart Sensing A first-of-its-kind sensing platform, Smart Sensing adapts to your unique finger, ensuring continuous, accurate data from over 30 biometrics - day and night. Smart Sensing A first-of-its-kind sensing platform, Smart Sensing adapts to your unique finger, ensuring continuous, accurate data from over 30 biometrics - day and night. Long battery life Up to 8 days of battery means you can track your health 24/7 without charging every night. Long battery life Up to 8 days of battery means you can track your health 24/7 without charging every night. Always Wearable Oura Ring 4 is more comfortable with a fully round interior with discreet, recessed sensors. It's water resistant and can withstand heat, and cold. Always Wearable Oura Ring 4 is more comfortable with a fully round interior with discreet, recessed sensors. It's water resistant and can withstand heat, and cold. Sleep Activity Readiness Stress Heart Health Women’s Health Wake up to in-depth sleep analysis, so you can improve your habits and transform how you feel. Whether you’re running a marathon or running errands, Oura tracks your daily activity and workouts while helping you strike a balance between movement and recovery. Know when to push it and when to take it easy. Your Readiness Score tells you how energised you are using over 30 biometrics - it can even tell when you might be getting sick. 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 practises and how to recover from long-term stressors. 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. 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. Size Before You Buy Step 1 Purchase an Oura Ring 4 Sizing Kit. Step 2 Purchase your Oura Ring 4. Step 3 Slip on your Oura Ring 4 and download the Oura App. Step 4 New members get the first month of Oura Membership free, then it’s ₹599 per month. Oura Ring 4 What's in the Box Oura Ring 4 Charger and USB-C Cable Review: Go for it. Its definitely worth it. - Awesome product. Perfection in everything. Does not throw numbers and data and interpretations at you immediately. Comfortable to wear. Just make sure you have tried the sizing kit before hand for atleast 4 to 6 hours if not 24 hours. I am getting a battery life of 5 days plus. Review: Must have smart ring - Amazing product. I was waiting to see the smart ring feedback. Great insight into fitness and sleep. Step count quite accurate. Battery easily last 5 to 6 days ## Features - SIZE BEFORE YOU BUY - Oura Ring 4 sizes are different from standard ring sizes. Size yourself with the Oura Ring 4 Sizing Kit and receive a 999 INR desertcart credit towards the future purchase of an Oura Ring 4 - OURA MEMBERSHIP - First month of membership is free with your purchase, INR 599/mo afterwards. Offer available to new members only. Opt for annual prepaid option for INR 6999. Membership is tied to your account via the Oura App, not your physical ring. - 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 you — delivering accurate, continuous data, day and night - 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 - 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 - WARRANTY: 2 year limited manufacturer warranty ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0D9WVSZ56 | | Batteries | 1 Lithium Polymer batteries required. (included) | | Batteries Included | Yes | | Batteries Required | Yes | | Battery cell composition | Lithium Polymer | | Brand | OURA | | Compatible Devices | Smartphone | | Connector Type | Bluetooth, USB | | Customer Reviews | 4.0 4.0 out of 5 stars (5,414) | | Date First Available | 3 October 2024 | | Device interface - primary | Buttons | | Display Type | No Display | | Includes Rechargeable Battery | Yes | | Item Dimensions LxWxH | 25 x 25 x 7 Millimeters | | Item Weight | 5.2 g | | Item model number | JZ90-54217-08 | | Manufacturer | Oura | | Memory Storage Capacity | 5 MB | | Model | JZ90-54217-08 | | Mounting Hardware | Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide | | Number of items | 1 | | Product Dimensions | 2.5 x 2.5 x 0.7 cm; 5.2 g | | Special Features | Heart Rate Monitor, Activity Tracker | | Wireless Type | Bluetooth | ## Product Details - **Battery Cell Composition:** Lithium Polymer - **Connectivity Technology:** Bluetooth - **Memory Storage Capacity:** 5 MB - **Special Feature:** Heart Rate Monitor, Activity Tracker - **Wireless Communication Standard:** Bluetooth ## Images ![OURA Ring 4 - Silver - Size 8 - Smart Ring | Size First Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life - Image 1](https://m.media-amazon.com/images/I/61FTYzxTpoL.jpg) ![OURA Ring 4 - Silver - Size 8 - Smart Ring | Size First Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life - Image 2](https://m.media-amazon.com/images/I/61O+9hiWZ2L.jpg) ![OURA Ring 4 - Silver - Size 8 - Smart Ring | Size First Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life - Image 3](https://m.media-amazon.com/images/I/61t3KyZGGSL.jpg) ![OURA Ring 4 - Silver - Size 8 - Smart Ring | Size First Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life - Image 4](https://m.media-amazon.com/images/I/71e0oyD3dpL.jpg) ![OURA Ring 4 - Silver - Size 8 - Smart Ring | Size First Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life - Image 5](https://m.media-amazon.com/images/I/71dv53hizrL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: How long should my ring work between charges?** A: Oura Ring 4 typically lasts 5-8 days on a full charge, depending on usage. Contact Oura Member Care if you have questions or concerns with battery life, and they will ensure your problem is resolved **Q: How do I choose the right Oura Ring size?** A: Using the Oura Ring 4 Sizing Kit, choose a finger for your ring. We recommend the index, middle or ring finger. Wear the sizer ring for 24 hours to ensure the fit is secure and comfortable over the course of your day. **Q: What's included?** A: Oura Ring 4, Oura Ring 4 Charger, and USB-C Cable. **Q: How do I see my Oura Ring metrics?** A: After activating your Oura Ring, you can choose a monthly or annual membership to unlock full access to Oura’s features, daily health and wellness metrics, and personalized guidance. **Q: Can I use more than one ring?** A: Oura Members can now connect more than one Oura Ring 4 to their Oura App and quickly switch between them. Note, this feature only supports wearing and syncing data from one active Oura Ring at a time. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Go for it. Its definitely worth it. *by D***Y on 4 April 2026* Awesome product. Perfection in everything. Does not throw numbers and data and interpretations at you immediately. Comfortable to wear. Just make sure you have tried the sizing kit before hand for atleast 4 to 6 hours if not 24 hours. I am getting a battery life of 5 days plus. ### ⭐⭐⭐⭐⭐ Must have smart ring *by X***Z on 2 April 2026* Amazing product. I was waiting to see the smart ring feedback. Great insight into fitness and sleep. Step count quite accurate. Battery easily last 5 to 6 days ### ⭐ Not satisfied *by S***L on 11 April 2026* Not recommended by me and why I have to pay every month to see my data, if anyone has any idea let me know ## Frequently Bought Together - Oura Ring 4 - Silver - Size 8 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life - sylacor Ring Cover for Oura Ring Gen 4/ Gen 3, Anti-Scratch Elastic Silicone Oura Ring Case Protector for Men Women Working Out Gym - ZOOROO 2-Pack 14K Gold Plated Stacking Rings for Oura Gen 4/Oura Gen 3, Cubic Zirconia Simulated Diamond Oura Ring Stack for Women --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.fr/products/723716256-oura-ring-4-silver-size-8-smart-ring-size-first](https://www.desertcart.fr/products/723716256-oura-ring-4-silver-size-8-smart-ring-size-first) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-04-29*