---
product_id: 734026031
title: "Ring 4 - Silver - Size 10 - Smart Ring | Size First Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life"
brand: "oura"
price: "€ 414.25"
currency: EUR
in_stock: true
reviews_count: 13
category: "Oura"
url: https://www.desertcart.at/products/734026031-ring-4-silver-size-10-smart-ring-size-first-ring
store_origin: AT
region: Austria
---

# 8 days battery life Water resistant titanium build 30+ biometric sensors Ring 4 - Silver - Size 10 - Smart Ring | Size First Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life

**Brand:** oura
**Price:** € 414.25
**Availability:** ✅ In Stock

## Summary

> 💍 Elevate your health game with the ring that knows you best.

## Quick Answers

- **What is this?** Ring 4 - Silver - Size 10 - 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?** € 414.25 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/734026031-ring-4-silver-size-10-smart-ring-size-first-ring)

## 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 longer with a battery that outlasts your busiest week.
- • **Seamless 24/7 Wearability:** Water resistant and ergonomically designed for all-day, every-day use without distractions.
- • **Titanium Tough, Feather Light:** Experience unmatched durability and comfort with aerospace-grade titanium.
- • **30+ Biometrics, One Smart Ring:** Track sleep, heart rate, stress, and more with precision that adapts to you.
- • **Personalized Wellness Insights:** Unlock expert-curated health data and readiness scores to optimize your lifestyle.

## Overview

The Oura Ring 4 is a sleek, all-titanium smart ring designed for continuous 24/7 health tracking. It monitors over 30 biometrics including sleep, heart rate, stress, and women’s health metrics with Smart Sensing technology. Featuring up to 8 days of battery life and water resistance, it offers durable comfort without interruptions. Paired with the Oura App and membership, it delivers personalized wellness insights to help you optimize your daily performance and recovery.

## 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: Sensitive and accurate - The sleep review is excellent. I have problems with sleep and the ring is really helping me. One problem is it doesn't track walking on the treadmill if you keep your hands on the bar but that's an easy fix. Sensitivity is good. The charge stays for over 7 days.
Review: The best tracking ever very close to apple watch - Its the best- I would if you bought this newly just wait for a month to see the magic.

## 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
- EXPERT-CURATED TECH: Part of desertcart's Smartchoice program, the Oura Ring 4 simplifies your wellness journey. Vetted by tech specialists, this sleek wearable tracks sleep, readiness, and active heart rate without complex jargon or data confusion

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D9WT1S2T |
| Age Range Description | Adult |
| Band Color | Silver |
| Band Material Type | Silver |
| Battery Cell Composition | Lithium Polymer |
| Battery Cell Type | Lithium Polymer |
| Box Contents | Battery |
| Brand Name | OURA |
| Case Material Type | Titanium |
| Closure Type | Slip On |
| Colour | Silver |
| Compatible Devices | Smartphone |
| Compatible Phone Models | [Broad range of smartphone models] |
| Connectivity Technology | Bluetooth |
| Controller Type | Ring |
| Customer Reviews | 4.0 out of 5 stars 6,113 Reviews |
| Display Type | No Display |
| GPS | No GPS |
| GPS Geotagging Functionality | No GPS |
| Human Interface Input | Unknown |
| Item Dimensions | 27 x 27 x 7 Millimeters |
| Item Weight Unit of Measure | 180 Grams |
| Manufacturer | OURA, OURA |
| Manufacturer Contact Information | OURA |
| Metrics Measured | Combination of Accelerometers, Optical Heart Rate Sensors, and Other Sensors |
| Model Name | Oura Ring 4 |
| Model Number | JZ90-54217-10 |
| Packer Contact Information | OURA |
| Product Features | Heart Rate Monitor, Activity Tracker |
| Shape | Ring |
| Special Feature | Heart Rate Monitor, Activity Tracker |
| Style Name | Metallic |
| Supported Application | Fitness Tracker |
| Target Audience | Adult |
| Unit Count | 1.00 Count |
| Warranty Description | #N/a |
| Water Resistance Level | Water Resistant |
| Wearable Computer Type | Smart Ring |
| Wireless Communication Standard | Bluetooth |
| Wireless Compability | Bluetooth |

## Product Details

- **Battery Cell Composition:** Lithium Polymer
- **Connectivity Technology:** Bluetooth
- **GPS:** No GPS
- **Special Feature:** Activity Tracker, Heart Rate Monitor, Oxymeter (SpO2), Sleep Monitor, Stress Tracking
- **Wireless Communication Standard:** Bluetooth

## Images

![Ring 4 - Silver - Size 10 - 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)

## 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

### ⭐⭐⭐⭐⭐ Sensitive and accurate
*by R***A on 15 June 2026*

The sleep review is excellent. I have problems with sleep and the ring is really helping me. One problem is it doesn't track walking on the treadmill if you keep your hands on the bar but that's an easy fix. Sensitivity is good. The charge stays for over 7 days.

### ⭐⭐⭐⭐⭐ The best tracking ever very close to apple watch
*by A***R on 16 June 2026*

Its the best- I would if you bought this newly just wait for a month to see the magic.

### ⭐ Beware
*by S***. on 21 June 2026*

Product failed after a month. Company is sending replacement. No clue about the problem or issue. Ring not connecting to app and charger shows white light and then off. Think before buying. Costs a lot and issues are still there

## Frequently Bought Together

- Oura Ring 4 - Silver - Size 10 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life
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**Shop now:** [https://www.desertcart.at/products/734026031-ring-4-silver-size-10-smart-ring-size-first-ring](https://www.desertcart.at/products/734026031-ring-4-silver-size-10-smart-ring-size-first-ring)

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*Product available on Desertcart Austria*
*Store origin: AT*
*Last updated: 2026-07-09*