---
product_id: 671537996
title: "Oura Ring 4 | Smart Ring | Size First with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life"
brand: "oura"
price: "£487.72"
currency: GBP
in_stock: false
reviews_count: 13
category: "Oura"
url: https://www.desertcart.co.uk/products/671537996-oura-ring-4-smart-ring-size-first-with-oura-ring
store_origin: GB
region: United Kingdom
---

# 8 days battery life Water resistant up to 50m Tracks 30+ biometrics Oura Ring 4 | Smart Ring | Size First with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life

**Brand:** oura
**Price:** £487.72
**Availability:** ❌ Out of Stock

## Summary

> 💍 Own your health, wear your edge.

## Quick Answers

- **What is this?** Oura Ring 4 | Smart Ring | Size First with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life by oura
- **How much does it cost?** £487.72 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/671537996-oura-ring-4-smart-ring-size-first-with-oura-ring)

## 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

- • **Effortless 8-Day Power:** Stay unplugged and unstoppable with a week-plus battery life that keeps pace with your busiest days and wildest nights.
- • **Sleek Titanium Durability:** Crafted from lightweight, hypoallergenic titanium, this ring is built to last and designed for 24/7 comfort—even in water up to 50 meters deep.
- • **Seamless Smart Connectivity:** Bluetooth-enabled and compatible with all major smartphones, syncing your health data effortlessly to the Oura app for real-time insights.
- • **Size First, Perfect Fit Always:** Avoid the guesswork with the Oura Ring 4 Sizing Kit—because your wellness journey deserves a ring that fits like a dream.
- • **Precision Biometrics at Your Fingertip:** Smart Sensing tech delivers hyper-accurate insights on sleep, heart rate, stress, and women’s health—because your body deserves elite-level tracking.

## Overview

The Oura Ring 4 is a cutting-edge smart ring designed for adults seeking comprehensive health tracking with style. Featuring adaptive biometric sensing, it monitors over 30 health metrics including sleep, heart rate, and stress. Its durable titanium build is water resistant up to 50 meters and offers up to 8 days of battery life. The ring pairs seamlessly with iOS and Android devices via Bluetooth, and comes with a sizing kit to ensure a perfect fit. Ideal for professionals who demand precision, comfort, and continuous wellness insights.

## Description

Oura Ring 4 - Rose Gold - Size 5 - Smart Wearable | Size First with Oura 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life : desertcart.ae: Electronics

Review: New Ring - My Oura Ring arrived in perfect condition, the box was closed and the ring is new, was very easy to create and account in the app, I got one month free subscription as advertised, I was so worry about the reviews and at the end everything works great. Love the ring colour.
Review: dying battery render the ring useless, free replacement seamlessly provided - Product works as expected and is hepful. After 7 months of usage battery is dying, resisiting less than one day after full charged. I contacted the seller, and free replacement arrived in couple of days, no need to return the mafunctioning one. As such, a one star reviewe turned into a 5 stars.

## Features

- SIZE BEFORE YOU BUY - Oura Ring 4 sizes are different from standard ring sizes. Size yourself with the Oura Ring 4 Sizing Kit and receive a dh35.00 desertcart credit towards the future purchase of an Oura Ring 4.
- OURA MEMBERSHIP - First month of membership is free with your purchase, $6.99/mo afterwards. Offer available to new members only. Or opt for the annual prepaid option for $79.99. Membership is tied to your account via the Oura App, not your physical ring.
- ACCURACY - SMART SENSING - Oura tracks over 30 biometrics, including sleep, activity, stress, heart health, and women’s health metrics. Oura Ring 4 is powered by Smart Sensing, which adapts to you — delivering accurate, continuous data, day and night.
- LONG LASTING BATTERY - With up to 8 days of battery life, no screens and no vibrations, Oura Ring 4 allows you to focus on the present. From a workout to a night out — you’re free to forget it’s on. Until you start getting compliments.
- DESIGNED FOR 24/7 WEAR - The updated design of the Oura Ring 4 is more comfortable, fits better than ever, and is water resistant. The first all-titanium smart ring combines exceptional durability with a gentle touch, even for sensitive skin.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D9WWMPSB |
| Additional Features | Adaptive Biometric Sensing |
| Age Range Description | Adult |
| Band Color | Rose Gold |
| Band Material Type | Metal |
| Battery Average Life | 8 days |
| Battery Capacity | 144000 Milliamp Hours |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Battery capacity | 144000 Milliamp Hours |
| Battery cell composition | Lithium Polymer |
| Best Sellers Rank | #388 in Electronics ( See Top 100 in Electronics ) #3 in Wearable Tech Rings |
| Brand | OURA |
| Built-In Media | Information Booklet, Oura Ring 4, Oura Ring 4 Charger, Quick Start Guide, USB-C Cable |
| Case Material Type | Titanium |
| Closure Type | No zipper |
| Color | Rose Gold |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone |
| Compatible Phone Models | All current iPhone models, all current Samsung Galaxy models, and other popular smartphone models running iOS and Android |
| Connectivity Technology | Bluetooth |
| Connectivity technology | Bluetooth |
| Country of Origin | Estonia |
| Customer Reviews | 4.1 out of 5 stars 7,487 Reviews |
| Display Type | No Display |
| GPS Geotagging Functionality | No GPS |
| Human Interface Input | Buttons |
| Importer Contact Information | Rashi Peripherals Limited, A BLDG Survey 186 Dongripada, Poman Village Vasai Bhiwandi Road Palghar 401208 India. |
| Item Dimensions | 23 x 23 x 8 millimeters |
| Item Dimensions D x W x H | 23D x 23W x 8H millimeters |
| Item Type Name | Smart Ring |
| Item Weight | 0.18 Kilograms |
| Manufacturer | Oura |
| Metrics Measured | Heart Rate Monitor, Sleep Duration |
| Model Name | Oura Ring 4 - Rose Gold - Size 5 |
| Model Number | JZ90-54219-05 |
| Operating System | Android |
| Operating system | Android |
| Packer Contact Information | Oura Health OY Elektroniikkatie 10 Oulu Oulu 90590 Finland https://ouraring.com |
| Shape | Round |
| Special features | Adaptive Biometric Sensing |
| Style Name | Minimalist |
| Supported Application | Fitness Tracker, Sleep Monitor, Heart Rate Monitor, Multisport Tracker, Health, Wellness |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adults |
| Unit Count | 1.0 Count |
| Warranty Description | 2 year manufacturer warranty |
| Warranty Type | Lifetime |
| Water Resistance Depth | 50 Meters |
| Water Resistance Level | Water Resistant |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |
| Wireless communication standard | Bluetooth |

## Product Details

- **Battery capacity:** 144000 Milliamp Hours
- **Connectivity technology:** Bluetooth
- **Operating system:** Android
- **Special features:** Adaptive Biometric Sensing
- **Wireless communication standard:** Bluetooth

## Images

![Oura Ring 4 | Smart Ring | Size First with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life - Image 1](https://m.media-amazon.com/images/I/51zKmnnZU8L.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

### ⭐⭐⭐⭐⭐ New Ring
*by A***A on 27 May 2026*

My Oura Ring arrived in perfect condition, the box was closed and the ring is new, was very easy to create and account in the app, I got one month free subscription as advertised, I was so worry about the reviews and at the end everything works great. Love the ring colour.

### ⭐⭐⭐⭐⭐ dying battery render the ring useless, free replacement seamlessly provided
*by R***U on 26 August 2025*

Product works as expected and is hepful. After 7 months of usage battery is dying, resisiting less than one day after full charged. I contacted the seller, and free replacement arrived in couple of days, no need to return the mafunctioning one. As such, a one star reviewe turned into a 5 stars.

### ⭐ Battery issue
*by A***Y on 16 February 2026*

After 5 months of usage battery capacity decreased to ~ 1.5 day. Sometimes during the night ring hangs and does not provide sleep metrics at all. This issue also seems to be related to battery malfunction. Latest firmware and soft resets do not help.

## Frequently Bought Together

- Oura Ring 4 - Rose Gold - Size 5 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life
- BandSmith Silicone Ring Cover Compatible with Oura Ring Protector, Elastic Case for Oura Ring Gen 4/3 Working Out - Patent Protected (Transparent+Transparent, S for 678910)

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**Shop now:** [https://www.desertcart.co.uk/products/671537996-oura-ring-4-smart-ring-size-first-with-oura-ring](https://www.desertcart.co.uk/products/671537996-oura-ring-4-smart-ring-size-first-with-oura-ring)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-06-28*