---
product_id: 698239244
title: "Oura Smart Ring 4 - Stealth - Size 13 - | Non-Standard Fit – Measure with a Size Kit |Sleep, Heart Rate and Fitness Tracking Wearable | 8-Day Battery, iOS / Android Compatible"
brand: "oura"
price: "€ 482.02"
currency: EUR
in_stock: true
category: "Oura"
url: https://www.desertcart.pt/products/698239244-oura-smart-ring-4-stealth-size-13-non-standard-fit
store_origin: PT
region: Portugal
---

# 8-day battery life IP67 water resistant 80 min wireless charge Oura Smart Ring 4 - Stealth - Size 13 - | Non-Standard Fit – Measure with a Size Kit |Sleep, Heart Rate and Fitness Tracking Wearable | 8-Day Battery, iOS / Android Compatible

**Brand:** oura
**Price:** € 482.02
**Availability:** ✅ In Stock

## Summary

> 💍 Own your health, invisibly powerful.

## Quick Answers

- **What is this?** Oura Smart Ring 4 - Stealth - Size 13 - | Non-Standard Fit – Measure with a Size Kit |Sleep, Heart Rate and Fitness Tracking Wearable | 8-Day Battery, iOS / Android Compatible by oura
- **How much does it cost?** € 482.02 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/698239244-oura-smart-ring-4-stealth-size-13-non-standard-fit)

## 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

- • **Seamless smart sync:** Effortlessly connect to iOS and Android devices via Bluetooth for real-time analytics and personalized health coaching in the Oura app.
- • **Sleek stealth titanium:** Minimalist, durable titanium design in stealth black that fits your style and your hustle, discreet yet powerful.
- • **All-day power, no pause:** Enjoy a full 8 days of uninterrupted health tracking with rapid 80-minute wireless charging—because your life doesn’t wait.
- • **Precision health insights:** Advanced sensors monitor heart rate, sleep quality, and activity levels with clinical-grade accuracy to optimize your wellness journey.
- • **Waterproof for every moment:** IP67-rated water resistance means your ring keeps up whether you’re in the gym, shower, or caught in the rain—no compromises.

## Overview

The Oura Smart Ring 4 in Stealth is a titanium, minimalist wearable designed for adults seeking precise health tracking. It offers 8-day battery life with fast wireless charging, monitors heart rate, sleep, and activity, and syncs seamlessly with iOS and Android devices. Water resistant to IP67 standards, it combines durability with discreet style for continuous wellness insights.

## Description

Free delivery and returns on eligible orders. Buy Oura Smart Ring 4 - Stealth - Size 13 - | Non-Standard Fit – Measure with a Size Kit |Sleep, Heart Rate and Fitness Tracking Wearable | 8-Day Battery, iOS / Android Compatible at desertcart UK.

## Features

- Compact and intelligent design for comfortable everyday wear
- Advanced health monitoring capabilities, including heart rate, sleep patterns, and activity tracking
- Long battery life with convenient wireless charging
- Seamless smartphone app integration for detailed health and activity analytics
- Available in multiple finishes and sizes for personalized style

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D9WW4XVP |
| Age Range Description | Adult |
| Band Colour | Stealth |
| Band Material Type | Titanium |
| Battery Average Life | 8 days |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Battery cell composition | Lithium Polymer |
| Best Sellers Rank | 567 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 1 in Wearable Tech Rings |
| Box Contents | Information Booklet, Oura Ring 4, Oura Ring 4 Charger, Quick Start Guide, USB-C Cable |
| Brand Name | OURA |
| Case Material Type | Titanium |
| Clasp Type | Tang Buckle |
| Closure Type | Tang Buckle |
| Colour | Stealth |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone |
| Compatible Phone Models | Compatible with iOS and Android devices |
| Connectivity Technology | Bluetooth |
| Connectivity technology | Bluetooth |
| Controller Type | Owner |
| Country of Origin | Estonia |
| Customer Reviews | 4.2 out of 5 stars 8,756 Reviews |
| Display Type | No Display |
| GPS | No GPS |
| GPS Geotagging Functionality | No GPS |
| Global Trade Identification Number | 06430060153578 |
| Human Interface Input | Unknown |
| Item Dimensions | 27 x 27 x 8 millimetres |
| Item Dimensions D x W x H | 27D x 27W x 8H millimetres |
| Item Weight | 0.19 Kilograms |
| Manufacturer | Oura |
| Metrics Measured | Heart Rate Monitor, Sleep Monitor |
| Model Name | Oura Ring 4 - Stealth - Size 13 |
| Model Number | JZ90-54218-13 |
| Operating System | Android |
| Operating system | Android |
| Product Features | Activity Tracker |
| Product Warranty | 3 year manufacturer warranty |
| Shape | Round |
| Special feature | Activity Tracker |
| Sport Type | Multi-Sports |
| Style Name | Minimalist |
| Supported Application | Sleep Monitor |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adults |
| Unit Count | 1.0 count |
| Warranty Type | Limited |
| Water Resistance Depth | 1 Metres |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IP67 |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |
| Wireless communication standard | Bluetooth |

## Product Details

- **Battery cell composition:** Lithium Polymer
- **Brand:** OURA
- **Connectivity technology:** Bluetooth
- **GPS:** No GPS
- **Model name:** Oura Ring 4 - Stealth - Size 13
- **Operating system:** Android
- **Shape:** Round
- **Special feature:** Activity Tracker
- **Style:** Minimalist
- **Wireless communication standard:** Bluetooth

## Images

![Oura Smart Ring 4 - Stealth - Size 13 - | Non-Standard Fit – Measure with a Size Kit |Sleep, Heart Rate and Fitness Tracking Wearable | 8-Day Battery, iOS / Android Compatible - Image 1](https://m.media-amazon.com/images/I/51NatpBotdL.jpg)
![Oura Smart Ring 4 - Stealth - Size 13 - | Non-Standard Fit – Measure with a Size Kit |Sleep, Heart Rate and Fitness Tracking Wearable | 8-Day Battery, iOS / Android Compatible - Image 2](https://m.media-amazon.com/images/I/51GryhzriFL.jpg)
![Oura Smart Ring 4 - Stealth - Size 13 - | Non-Standard Fit – Measure with a Size Kit |Sleep, Heart Rate and Fitness Tracking Wearable | 8-Day Battery, iOS / Android Compatible - Image 3](https://m.media-amazon.com/images/I/71EiYyz2UNL.jpg)
![Oura Smart Ring 4 - Stealth - Size 13 - | Non-Standard Fit – Measure with a Size Kit |Sleep, Heart Rate and Fitness Tracking Wearable | 8-Day Battery, iOS / Android Compatible - Image 4](https://m.media-amazon.com/images/I/613EYvr-lAL.jpg)
![Oura Smart Ring 4 - Stealth - Size 13 - | Non-Standard Fit – Measure with a Size Kit |Sleep, Heart Rate and Fitness Tracking Wearable | 8-Day Battery, iOS / Android Compatible - Image 5](https://m.media-amazon.com/images/I/61hE2tAIk5L.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.

## Frequently Bought Together

- Oura Ring 4 - Stealth - Size 13 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life
- Oura Ring 4 Charger - Size 13 - Charging Dock and USB-C Cable - Charges Oura Ring 4 up to 8 Days

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**Shop now:** [https://www.desertcart.pt/products/698239244-oura-smart-ring-4-stealth-size-13-non-standard-fit](https://www.desertcart.pt/products/698239244-oura-smart-ring-4-stealth-size-13-non-standard-fit)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-09-19*