---
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: "€ 556.40"
currency: EUR
in_stock: true
category: "Oura"
url: https://www.desertcart.de/products/698239244-oura-smart-ring-4-stealth-size-13-non-standard-fit
store_origin: DE
region: Germany
---

# 8-day battery life Continuous heart rate monitoring Advanced sleep tracking 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:** € 556.40
**Availability:** ✅ In Stock

## Summary

> 💍 Own your health, stealthily and stylishly.

## 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?** € 556.40 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/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

- • **Power That Lasts:** Up to 8 days of battery life with fast 80-minute wireless charging—stay unplugged longer.
- • **Tailored Fit & Style:** Non-standard sizing with a precision size kit and stealth finish for a personalized, minimalist look.
- • **Effortless All-Day Wear:** Sleek titanium design ensures comfort and durability for your busy lifestyle.
- • **Seamless Smartphone Sync:** Bluetooth connectivity with iOS and Android for real-time health analytics at your fingertips.
- • **Next-Level Health Insights:** Track sleep, heart rate, and activity with clinical-grade precision to optimize your wellness.

## Overview

The Oura Smart Ring 4 in Stealth is a minimalist titanium wearable that delivers advanced sleep, heart rate, and activity tracking with up to 8 days of battery life. Compatible with iOS and Android, it offers seamless Bluetooth syncing and a personalized fit via a size kit, making it the ultimate discreet health companion for professionals on the go.

## 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 |
| Best Sellers Rank | 501 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 |
| Controller Type | Owner |
| Country of Origin | Estonia |
| Customer Reviews | 4.2 4.2 out of 5 stars (8,731) |
| Display Type | No Display |
| 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 |
| Product Features | Activity Tracker |
| Product Warranty | 3 year manufacturer warranty |
| Shape | Round |
| 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 |

## 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/418ROdi0vFL.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/41tJsKzO2KL.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/418msFWVsXL.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/414AOMY+IfL.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/41VAdbswOuL.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.de/products/698239244-oura-smart-ring-4-stealth-size-13-non-standard-fit](https://www.desertcart.de/products/698239244-oura-smart-ring-4-stealth-size-13-non-standard-fit)

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-09-20*