---
product_id: 717709239
title: "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: "R$7256"
currency: BRL
in_stock: true
reviews_count: 8
category: "Oura"
url: https://www.desertcart.com.br/products/717709239-ring-4-smart-ring-size-first-with-oura-ring-4
store_origin: BR
region: Brazil
---

# 8 days battery life 100m water resistant 30+ biometric sensors 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:** R$7256
**Availability:** ✅ In Stock

## Summary

> 💍 Elevate your wellness game—wear the future on your finger.

## Quick Answers

- **What is this?** 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?** R$7256 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/717709239-ring-4-smart-ring-size-first-with-oura-ring-4)

## 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

- • **Precision Sizing, Perfect Fit:** Size yourself first with the exclusive Oura Ring 4 Sizing Kit—never guess your ring size again.
- • **All-Day, All-Night Smart Sensing:** Track 30+ biometrics including sleep, heart rate, stress, and women’s health with adaptive accuracy.
- • **Uninterrupted Power for Over a Week:** Enjoy up to 8 days of battery life with quick 80-minute recharge—stay connected without the hassle.
- • **Titanium Durability Meets Sleek Comfort:** Crafted from lightweight, hypoallergenic titanium for 24/7 wear that’s water resistant up to 100 meters.
- • **Seamless Integration & Exclusive Membership:** Sync effortlessly with iOS/Android devices and unlock premium insights with your first free month of Oura membership.

## Overview

The Oura Ring 4 is a cutting-edge smart ring designed for professionals who demand precision and style. Featuring over 30 biometric sensors, it delivers continuous, adaptive tracking of sleep, heart rate, stress, and activity metrics. Its durable titanium build ensures comfort and water resistance up to 100 meters, while the long-lasting 8-day battery keeps you unplugged longer. With a unique sizing kit and seamless smartphone integration, Oura Ring 4 offers a premium health tracking experience backed by a membership that unlocks deeper insights.

## Description

Buy Oura Ring 4 - Brushed Silver - Size 11 - Smart Wearable | Size First with Oura 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: Pricey and good quality - No wonder it is priced very high but it delivers the quality justifying the price tag
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 | B0D9WVHS7S |
| Additional Features | Heart Rate Monitor, Activity Tracker |
| Age Range Description | Adult |
| Band Color | Brushed Silver |
| Band Material Type | Stainless Steel |
| Battery Average Life | 8 days |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Battery cell composition | Lithium Polymer |
| Best Sellers Rank | #30 in Sporting Goods ( See Top 100 in Sporting Goods ) #2 in Activity Trackers |
| Brand | OURA |
| Built-In Media | Information Booklet, Oura Ring 4, Oura Ring 4 Charger, Quick Start Guide, USB-C Cable |
| Case Material Type | Titanium |
| Clasp Type | Tang Buckle |
| Closure Type | Tang Buckle |
| Color | Brushed Silver |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone, Tablet, Laptop |
| Compatible Phone Models | Compatible with iOS and Android devices |
| Connectivity Technology | Bluetooth |
| Connectivity technology | Bluetooth |
| Controller Type | Ring |
| Country of Origin | Estonia |
| Customer Reviews | 4.0 out of 5 stars 5,227 Reviews |
| Display Type | No Display |
| GPS | No GPS |
| GPS Geotagging Functionality | No GPS |
| Human Interface Input | Unknown |
| Item Dimensions | 25 x 25 x 8 millimeters |
| Item Dimensions D x W x H | 25D x 25W x 8H millimeters |
| Manufacturer | Oura |
| Metrics Measured | Heart Rate, Sleep Duration, Stress, Activity |
| Model Name | JZ90-54220-11 |
| Model Number | JZ90-54220-11 |
| Shape | ring |
| Special features | Heart Rate Monitor, Activity Tracker |
| Style Name | Classic & Elegant |
| Supported Application | iOS and Android, 40+ apps |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adult |
| Warranty Description | 2 year manufacturer warranty |
| Warranty Type | Limited |
| Water Resistance Depth | 100 Meters |
| Water Resistance Level | Water Resistant |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |
| Wireless communication standard | Bluetooth |

## Product Details

- **Battery cell composition:** Lithium Polymer
- **Connectivity technology:** Bluetooth
- **GPS:** No GPS
- **Special features:** Heart Rate Monitor, Activity Tracker
- **Wireless communication standard:** Bluetooth

## Images

![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/51yQA1CgzLL.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

### ⭐⭐⭐⭐⭐ Pricey and good quality
*by T***E on 23 November 2025*

No wonder it is priced very high but it delivers the quality justifying the price tag

### ⭐⭐⭐⭐⭐ 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.

### ⭐ Waste of money!
*by M***S on 27 September 2025*

Total waste of money! Zero after sales service and their system is compromised. Nothing against the seller but the issue I have is with Oura. My card details were leaked after paying for the membership and there is no support at all from oura neither is it very easy to speak to a human and get a resolution. I am stuck with a 1200 AED useless piece of junk

## Frequently Bought Together

- Oura Ring 4 - Brushed Silver - 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
- 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

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**Shop now:** [https://www.desertcart.com.br/products/717709239-ring-4-smart-ring-size-first-with-oura-ring-4](https://www.desertcart.com.br/products/717709239-ring-4-smart-ring-size-first-with-oura-ring-4)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-03-02*