---
product_id: 703964909
title: "OURA Smart Ring 4 - Stealth - Size 10 - | Non-Standard Fit – Measure with a Size Kit |Sleep, Heart Rate and Fitness Tracking Wearable | 8-Day Battery, iOS/Android Compatible"
brand: "oura"
price: "€ 599.57"
currency: EUR
in_stock: true
category: "Oura"
url: https://www.desertcart.sk/products/703964909-oura-smart-ring-4-stealth-size-10-non-standard-fit
store_origin: SK
region: Slovakia
---

# 8-day battery life Water resistant design 30+ biometric health metrics OURA Smart Ring 4 - Stealth - Size 10 - | Non-Standard Fit – Measure with a Size Kit |Sleep, Heart Rate and Fitness Tracking Wearable | 8-Day Battery, iOS/Android Compatible

**Brand:** oura
**Price:** € 599.57
**Availability:** ✅ In Stock

## Summary

> 💍 Own your health journey with the stealthy power of OURA Smart Ring 4

## Quick Answers

- **What is this?** OURA Smart Ring 4 - Stealth - Size 10 - | 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?** € 599.57 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/703964909-oura-smart-ring-4-stealth-size-10-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

- • **Data-Driven Wellness:** Over 30 biometric sensors deliver deep health analytics via seamless iOS/Android app integration.
- • **Minimalist Meets Modern:** Stealth finish and multiple sizes for a personalized, professional look that fits your lifestyle.
- • **Power Through Your Week:** Up to 8 days of battery life with fast 80-minute wireless charging keeps you connected without interruption.
- • **Stay Ahead, Stay Connected:** Bluetooth-enabled smart ring syncs effortlessly with your smartphone for real-time health insights.
- • **All-Day Comfort, All-Night Insight:** Sleek titanium build ensures you barely notice it while it tracks your sleep and heart rate with precision.

## Overview

The OURA Smart Ring 4 in Stealth is a titanium, water-resistant wearable that tracks over 30 biometric health metrics including heart rate and sleep patterns. Compatible with iOS and Android, it offers up to 8 days of battery life with fast wireless charging, all packed into a minimalist, comfortable design tailored for professional millennials seeking data-driven wellness.

## Description

Free delivery and returns on eligible orders. Buy OURA Smart Ring 4 - Stealth - Size 10 - | 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 | B0D9WVKWXN |
| Band Material Type | Titanium |
| Battery Average Life | 7 days |
| Battery Capacity | 144 Milliamp Hours |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Best Sellers Rank | 575 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 |
| Closure Type | No Closure |
| Colour | Stealth |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone |
| Compatible Phone Models | all current iPhone models, all current Android models |
| Connectivity Technology | Bluetooth |
| Country of Origin | Estonia |
| Customer Reviews | 4.3 4.3 out of 5 stars (8,682) |
| Display Type | Analog |
| GPS Geotagging Functionality | No GPS |
| Human Interface Input | Unknown |
| Item Dimensions | 24 x 24 x 8 millimetres |
| Item Weight | 6.3 Ounces |
| Manufacturer | Oura |
| Memory Storage Capacity | 16 MB |
| Metrics Measured | Heart Rate Monitor, Sleep Monitor |
| Model Number | JZ90-54218-10 |
| Operating System | Android |
| Product Features | Advanced Health Tracking (Over 30 Biometrics) |
| Product Warranty | 3 year manufacturer warranty |
| Shape | Round |
| Style Name | Minimalist |
| Supported Application | Fitness Tracker |
| Supported Satellite Navigation System | GPS |
| Warranty Type | Standard |
| Water Resistance Level | Water Resistant |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |
| Wireless Provider | Unlocked |

## Product Details

- **Battery capacity:** 144 Milliamp Hours
- **Battery cell composition:** Lithium Polymer
- **Brand:** OURA
- **Connectivity technology:** Bluetooth
- **GPS:** No GPS
- **Memory storage capacity:** 16 MB
- **Operating system:** Android
- **Shape:** Round
- **Special feature:** Advanced Health Tracking (Over 30 Biometrics)
- **Wireless communication standard:** Bluetooth

## Images

![OURA Smart Ring 4 - Stealth - Size 10 - | 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 10 - | 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 10 - | 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 10 - | 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 10 - | 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 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
- Oura Ring 4 Charger - Size 10 - Charging Dock and USB-C Cable - Charges Oura Ring 4 up to 8 Days
- 10 Pack Ring Cover Compatible with Oura Ring Gen 4/Oura Ring Gen 3 Horizon/Gen 3 Heritage, Surport Charging with Cover on, Anti-Scratch Elastic Silicone Ring Protector for Men Women Working Out Gym

---

## 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.sk/products/703964909-oura-smart-ring-4-stealth-size-10-non-standard-fit](https://www.desertcart.sk/products/703964909-oura-smart-ring-4-stealth-size-10-non-standard-fit)

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-09-05*