---
product_id: 704969049
title: "Oura Ring 4 - Silver - Size 7 - Size Before You Buy"
brand: "oura"
price: "€ 677.51"
currency: EUR
in_stock: true
reviews_count: 11
category: "Oura"
url: https://www.desertcart.pt/products/704969049-oura-ring-4-silver-size-7-size-before-you-buy
store_origin: PT
region: Portugal
---

# 8-day battery life 100m water resistant Bluetooth seamless sync Oura Ring 4 - Silver - Size 7 - Size Before You Buy

**Brand:** oura
**Price:** € 677.51
**Availability:** ✅ In Stock

## Summary

> 💍 Elevate your wellness game with the ring that’s smarter than your average accessory.

## Quick Answers

- **What is this?** Oura Ring 4 - Silver - Size 7 - Size Before You Buy by oura
- **How much does it cost?** € 677.51 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/704969049-oura-ring-4-silver-size-7-size-before-you-buy)

## 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

- • **Sleek meets smart:** Titanium and stainless steel design for a minimalist, durable, and stylish everyday wearable.
- • **All-day power, no pause:** Up to 8 days of uninterrupted health tracking with quick 80-minute wireless charging.
- • **Dive into data, not water worries:** Water-resistant up to 100 meters—wear it rain or shine, pool or ocean.
- • **Health insights at your fingertips:** Advanced sensors monitor heart rate, sleep quality, stress, and activity with real-time app integration.
- • **Fits your lifestyle, fits your finger:** Available in multiple sizes and finishes for a personalized, comfortable fit that blends with your style.

## Overview

The Oura Ring 4 in Silver is a cutting-edge smart ring designed for adults seeking discreet, continuous health monitoring. Featuring an 8-day battery life, 100-meter water resistance, and Bluetooth Low Energy connectivity, it tracks heart rate, sleep, stress, and activity seamlessly through a dedicated smartphone app. Crafted from durable titanium and stainless steel, it offers a minimalist style with a comfortable slip-on fit, making it the perfect wearable for professionals who want data-driven wellness without the bulk of a smartwatch.

## Description

Free delivery and returns on eligible orders. Buy Oura Ring 4 - Silver - Size 7 - Size Before You Buy at desertcart UK.

Review: Great Product - Great Product does the job on tracking sleep, heart rate, movement etc. Very easy to set up and get going. Would recommend for those that do not want to wear a smart watch.
Review: So So Happy! - I hesitated for a while before investing in this gadget. And I love my Gadgets! but after doing some homework on the competition, I decided to jump for it. First, the fit and metal colour are great, I couldn't be happier, the quality and durability is insane, i do everything with it, I rarely take it off. The connectivity to my Samsung Z Fold6 was flawless, no hiccups, plus, everything you open the app, it updates in no time. so great compatibility. Now, you need to give it time to gather data about you, of course... it will not happen overnight which is quite right, but the intel you get afterwards is great. Your body age, sleep quality, energy available, your stress, it is such a great little ring. it is a lot of money for such a small device but the value for money is worth it. I highly recommend it if you are curious and want to be nudge in the right direction for better health.

## 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 | B0D9WW6RPJ |
| Age Range Description | Adult |
| Band Colour | Silver |
| Band Material Type | Stainless Steel |
| Battery Average Life | 8 days |
| Battery Capacity | 16 Milliamp Hours |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Best Sellers Rank | 379 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 |
| Closure Type | Slip On |
| Colour | Silver |
| Communication Feature | Bluetooth® Low Energy |
| Compatible Devices | Smartphone, Tablet |
| Compatible Phone Models | Compatible with iOS and Android devices |
| Connectivity Technology | Bluetooth |
| Controller Type | Ring |
| Customer Reviews | 4.2 4.2 out of 5 stars (6,361) |
| Display Type | No Display |
| GPS Geotagging Functionality | No GPS |
| Human Interface Input | Buttons |
| Item Dimensions | 24 x 24 x 7 millimetres |
| Item Dimensions D x W x H | 24D x 24W x 7H millimetres |
| Manufacturer | Oura |
| Memory Storage Capacity | 4 GB |
| Metrics Measured | Optical Heart Rate Sensor |
| Model Name | Oura Ring 4 - Silver - Size 7 |
| Model Number | JZ90-54217-07 |
| Operating System | Android |
| Product Features | Heart Rate Monitor, Stress Monitor |
| RAM Memory Installed | 512 KB |
| Shape | Round |
| Style Name | Minimalist |
| Supported Application | Fitness Tracker |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adults |
| Warranty Type | Lifetime |
| Water Resistance Depth | 100 Metres |
| Water Resistance Level | Water Resistant |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |

## Product Details

- **Battery capacity:** 16 Milliamp Hours
- **Battery cell composition:** Lithium Polymer
- **Brand:** OURA
- **Connectivity technology:** Bluetooth
- **GPS:** No GPS
- **Memory storage capacity:** 4 GB
- **Operating system:** Android
- **Shape:** Round
- **Special feature:** Heart Rate Monitor, Stress Monitor
- **Wireless communication standard:** Bluetooth

## Images

![Oura Ring 4 - Silver - Size 7 - Size Before You Buy - Image 1](https://m.media-amazon.com/images/I/5155uTN9BPL.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

### ⭐⭐⭐⭐⭐ Great Product
*by L***S on 23 March 2026*

Great Product does the job on tracking sleep, heart rate, movement etc. Very easy to set up and get going. Would recommend for those that do not want to wear a smart watch.

### ⭐⭐⭐⭐⭐ So So Happy!
*by M***D on 18 October 2025*

I hesitated for a while before investing in this gadget. And I love my Gadgets! but after doing some homework on the competition, I decided to jump for it. First, the fit and metal colour are great, I couldn't be happier, the quality and durability is insane, i do everything with it, I rarely take it off. The connectivity to my Samsung Z Fold6 was flawless, no hiccups, plus, everything you open the app, it updates in no time. so great compatibility. Now, you need to give it time to gather data about you, of course... it will not happen overnight which is quite right, but the intel you get afterwards is great. Your body age, sleep quality, energy available, your stress, it is such a great little ring. it is a lot of money for such a small device but the value for money is worth it. I highly recommend it if you are curious and want to be nudge in the right direction for better health.

### ⭐⭐⭐⭐⭐ A great tool which does exactly what it says.
*by T***P on 12 December 2025*

The app is brilliant. It takes a while to get to know you, so don't expect instant insights, but as it builds a picture it is really good at telling you what's going on. I am using it to track my food etc as well, so not exclusively related to what's happening on the ring. On the ring specifically? Well, it is chunkier than a ring you'd buy as jewellery. That's ok and it's not ridiculous, but you have to get used to it. I do find I take it off and put it on more, or change fingers, as my hand needs a rest. The colour... Despite the name stealth, does stand out. If you want something more subtle then brushed or silver is probably better, as it's more like typical jewellery. That being said, I've gotten used to it. Sizing - definitely get the sizing kit and wear not for a few mins but for a day or two to understand how your fingers change size. Battery life is good. I reckon 8 charge it once every 4 otlr 5 days so far. I understand turning off blood oxygen measuring is the way to really eek out more battery life. You can also use airplane mode to reduce how often it speaks to your phone. But yeah, no regrets, it's a great tool and honestly, easier to live with than a smart watch.

## Frequently Bought Together

- Oura Ring 4 - Silver - Size 7 - 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.pt/products/704969049-oura-ring-4-silver-size-7-size-before-you-buy](https://www.desertcart.pt/products/704969049-oura-ring-4-silver-size-7-size-before-you-buy)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-04-24*