---
product_id: 703350407
title: "OURA Ring 4 - Silver - Size 8 - Smart Ring | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life"
brand: "oura"
price: "£435.85"
currency: GBP
in_stock: true
reviews_count: 12
category: "Oura"
url: https://www.desertcart.co.uk/products/703350407-oura-ring-4-silver-size-8-smart-ring-sleep-tracking
store_origin: GB
region: Great Britain
---

# 8 days battery life 24/7 heart rate monitoring Seamless app integration OURA Ring 4 - Silver - Size 8 - Smart Ring | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life

**Brand:** oura
**Price:** £435.85
**Availability:** ✅ In Stock

## Summary

> 💍 Elevate your health game with the ring that works as hard as you do.

## Quick Answers

- **What is this?** OURA Ring 4 - Silver - Size 8 - Smart Ring | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life by oura
- **How much does it cost?** £435.85 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/703350407-oura-ring-4-silver-size-8-smart-ring-sleep-tracking)

## 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

- • **Waterproof & Ready:** IP68 water resistance means your ring stays protected through workouts, showers, and daily hustle without missing a beat.
- • **All-day Power, No Pause:** Up to 8 days of uninterrupted battery life with quick 80-minute wireless charging keeps you ahead without the downtime.
- • **Smart Sync, Smarter You:** Instant Bluetooth connectivity with iOS and Android ensures your health data updates in real-time for actionable insights.
- • **Sleek Titanium Durability:** Crafted from lightweight, premium titanium for a stylish, durable ring that fits your modern lifestyle.
- • **Health Insights on Your Finger:** Advanced sensors track heart rate, sleep quality, and activity patterns to optimize your wellness journey effortlessly.

## Overview

The OURA Ring 4 in Silver is a cutting-edge smart ring designed for professionals seeking discreet, continuous health monitoring. Featuring up to 8 days of battery life, titanium durability, and seamless Bluetooth app integration, it tracks heart rate, sleep, and activity with precision. Water-resistant and compatible with over 40 health apps, it offers a sleek, data-driven edge to optimize your wellness routine.

## Description

Free delivery and returns on eligible orders. Buy OURA Ring 4 - Silver - Size 8 - Smart Ring | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life 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: Great item, very efficient at tracking - I love this ring, it does everything and more that you could ever want from a fitness tracker. It also works really well alongside your Apple Watch. I would highly recommend and it was sent to me within 24 hours.

## 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 | B0D9WVSZ56 |
| Age Range Description | Adult |
| Band Colour | Silver |
| Band Material Type | Titanium |
| Battery Average Life | 8 days |
| Battery Capacity | 26 Milliamp Hours |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Best Sellers Rank | 298 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 | App Integration, Bluetooth |
| Compatible Devices | Smartphone |
| Compatible Phone Models | iOS, Android |
| Connectivity Technology | Bluetooth, USB |
| Controller Type | Remote control via smartphone |
| Country of Origin | Estonia |
| Customer Reviews | 4.2 4.2 out of 5 stars (6,842) |
| Display Type | No Display |
| GPS Geotagging Functionality | No GPS |
| Human Interface Input | Buttons |
| Item Dimensions | 25 x 25 x 7 millimetres |
| Item Dimensions D x W x H | 25D x 25W x 7H millimetres |
| Item Weight | 5.2 Grams |
| Manufacturer | Oura |
| Memory Storage Capacity | 5 MB |
| Metrics Measured | optical, accelerometer |
| Model Name | Oura Ring 4 - Silver - Size 8 |
| Model Number | JZ90-54217-08 |
| Operating System | Android |
| Product Features | Heart Rate Monitor, Activity Tracker |
| Shape | Ring |
| Sport Type | Multi-Sports |
| Style Name | Modern |
| Supported Application | Over 40 apps including Apple Health, Google Health Connect, Natural Cycles, Flo, Strava, & more |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adult |
| Unit Count | 1.0 count |
| Warranty Type | Lifetime |
| Water Resistance Depth | 1 Metres |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IP68 |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |

## Product Details

- **Battery capacity:** 26 Milliamp Hours
- **Battery cell composition:** Lithium Polymer
- **Brand:** OURA
- **Connectivity technology:** Bluetooth, USB
- **GPS:** No GPS
- **Memory storage capacity:** 5 MB
- **Operating system:** Android
- **Shape:** Ring
- **Special feature:** Heart Rate Monitor, Activity Tracker
- **Wireless communication standard:** Bluetooth

## Images

![OURA Ring 4 - Silver - Size 8 - Smart Ring | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life - 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.

### ⭐⭐⭐⭐⭐ Great item, very efficient at tracking
*by L***N on 8 April 2026*

I love this ring, it does everything and more that you could ever want from a fitness tracker. It also works really well alongside your Apple Watch. I would highly recommend and it was sent to me within 24 hours.

### ⭐⭐⭐⭐⭐ 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.

## Frequently Bought Together

- Oura Ring 4 - Silver - Size 8 - 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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- ZOOROO 2-Pack 14K Gold Plated Stacking Rings for Oura Gen 4/Oura Gen 3, Cubic Zirconia Simulated Diamond Oura Ring Stack for Women

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**Shop now:** [https://www.desertcart.co.uk/products/703350407-oura-ring-4-silver-size-8-smart-ring-sleep-tracking](https://www.desertcart.co.uk/products/703350407-oura-ring-4-silver-size-8-smart-ring-sleep-tracking)

---

*Product available on Desertcart Great Britain*
*Store origin: GB*
*Last updated: 2026-04-22*