---
product_id: 696446521
title: "OURA Smart Ring 4 - Stealth - Size 11 - | Non-Standard Fit – Measure with a Size Kit |Sleep, Heart Rate and Fitness Tracking Wearable | 8-Day Battery, iOS/Android Compatible"
brand: "oura"
price: "3125 Lei"
currency: RON
in_stock: true
category: "Oura"
url: https://www.desertcart.ro/products/696446521-oura-smart-ring-4-stealth-size-11-non-standard-fit
store_origin: RO
region: Romania
---

# 8-day battery life IP68 waterproof rating 30+ biometric sensors OURA Smart Ring 4 - Stealth - Size 11 - | Non-Standard Fit – Measure with a Size Kit |Sleep, Heart Rate and Fitness Tracking Wearable | 8-Day Battery, iOS/Android Compatible

**Brand:** oura
**Price:** 3125 Lei
**Availability:** ✅ In Stock

## Summary

> 💍 Own your health in stealth mode — smart, sleek, unstoppable.

## Quick Answers

- **What is this?** OURA Smart Ring 4 - Stealth - Size 11 - | 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?** 3125 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/696446521-oura-smart-ring-4-stealth-size-11-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

- • **Deep Health Insights:** Track heart rate, sleep quality, stress, and over 30 biometric metrics for holistic wellness
- • **Waterproof Confidence:** IP68-rated water resistance lets you track fitness and recovery rain or shine, pool or ocean
- • **Sleek Titanium Stealth:** Minimalist, durable titanium design that fits comfortably and looks effortlessly professional
- • **All-Day Power, No Pause:** Up to 8 days of uninterrupted tracking with fast 80-minute wireless charging
- • **Seamless Sync & Smart Alerts:** Bluetooth connectivity with iOS/Android apps delivers real-time data and personalized guidance

## Overview

The OURA Smart Ring 4 in Stealth is a cutting-edge wearable crafted from titanium, offering advanced health monitoring with over 30 biometric sensors including heart rate and sleep tracking. It boasts an impressive 8-day battery life with wireless charging, seamless Bluetooth integration with iOS and Android devices, and a water-resistant IP68 rating, making it the perfect minimalist companion for professionals who demand style and data-driven wellness on the go.

## Description

Free delivery and returns on eligible orders. Buy OURA Smart Ring 4 - Stealth - Size 11 - | 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 | B0D9WWHXHH |
| Age Range Description | Adult |
| Band Colour | Stealth |
| Band Material Type | Titanium |
| Battery Average Life | 8 days |
| Battery Capacity | 6720 |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Best Sellers Rank | 589 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 2 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 |
| Closure Type | Buckle |
| Colour | Stealth |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone |
| Compatible Phone Models | Compatible with iOS and Android devices |
| Connectivity Technology | Bluetooth |
| Country of Origin | Estonia |
| Customer Reviews | 4.2 4.2 out of 5 stars (8,736) |
| Display Type | Analog |
| GPS Geotagging Functionality | No GPS |
| Human Interface Input | Unknown |
| Item Dimensions | 25 x 25 x 8 millimetres |
| Item Weight | 0.19 Kilograms |
| Manufacturer | Oura |
| Metrics Measured | Heart Rate Monitor, Sleep Duration, Stress Monitor |
| Model Name | Oura Ring 4 - Stealth - Size 11 |
| Model Number | JZ90-54218-11 |
| Operating System | Android |
| Product Features | Smart Sensing, Wasserdicht, Lange Akkulaufzeit, Mehr als 30 biometrische Daten |
| Product Warranty | 3 year manufacturer warranty |
| Shape | Round |
| Style Name | Minimalist |
| Supported Application | Fitness Tracker, Sleep Monitor, Heart Rate Monitor, Pedometer, Multisport Tracker, Reminders, Calendar, Music Player, Messages, Social Media, Weather, Contacts, Photo Gallery, Find My Phone, Voice Assistant, Voice Control, Voice Record, Time Display, Phone, Video Record, Camera, Alarm, Blood Pressure Monitor, Elevation Tracker, Email, GPS |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adults |
| Unit Count | 1.0 count |
| Warranty Type | Lifetime |
| Water Resistance Depth | 50 Metres |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IP68 |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |
| Wireless Provider | Unlocked |

## Product Details

- **Battery capacity:** 6720
- **Battery cell composition:** Lithium Polymer
- **Brand:** OURA
- **Connectivity technology:** Bluetooth
- **GPS:** No GPS
- **Model name:** Oura Ring 4 - Stealth - Size 11
- **Operating system:** Android
- **Shape:** Round
- **Special feature:** Smart Sensing, Wasserdicht, Lange Akkulaufzeit, Mehr als 30 biometrische Daten
- **Wireless communication standard:** Bluetooth

## Images

![OURA Smart Ring 4 - Stealth - Size 11 - | 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 11 - | 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 11 - | 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 11 - | 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 11 - | 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 11 - 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 11 - Charging Dock and USB-C Cable - Charges Oura Ring 4 up to 8 Days

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**Shop now:** [https://www.desertcart.ro/products/696446521-oura-smart-ring-4-stealth-size-11-non-standard-fit](https://www.desertcart.ro/products/696446521-oura-smart-ring-4-stealth-size-11-non-standard-fit)

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-09-11*