---
product_id: 675769619
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: "R$9042"
currency: BRL
in_stock: true
reviews_count: 8
category: "Oura"
url: https://www.desertcart.com.br/products/675769619-oura-ring-4-smart-ring-size-first-with-oura-ring
store_origin: BR
region: Brazil
---

# 8 days battery life Water resistant up to 100m 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:** R$9042
**Availability:** ✅ In Stock

## Summary

> 💍 Elevate your wellness game with the ring that knows you best.

## 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?** R$9042 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/675769619-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

- • **All-Day Smart Sensing:** Continuously monitors sleep, heart rate, activity, stress, and women’s health with adaptive accuracy.
- • **Unmatched Battery Freedom:** Up to 8 days of uninterrupted use means less charging, more living.
- • **Precision Sizing, Perfect Fit:** Size yourself first with the Oura Ring 4 Sizing Kit for flawless comfort and style.
- • **Seamless Connectivity & Insights:** Syncs effortlessly with iOS and Android via Bluetooth for real-time health analytics.
- • **Titanium Durability Meets Elegance:** Lightweight, hypoallergenic, and water resistant—wear it 24/7 without compromise.

## Overview

The Oura Ring 4 is a premium smart ring crafted from durable titanium, designed for 24/7 wear. It tracks over 30 biometric signals including sleep, heart rate, activity, and stress with advanced Smart Sensing technology. Featuring up to 8 days of battery life and water resistance up to 100 meters, it offers seamless Bluetooth connectivity to iOS and Android devices. The included sizing kit ensures a perfect fit, while the Oura membership unlocks personalized health insights, making it the ultimate wearable for health-conscious professionals.

## Description

Oura Ring 4 - Gold - Size 10 - 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: 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 | B0D9WWHMJW |
| Additional Features | Heart Rate Monitor, Activity Tracker |
| Age Range Description | Adult |
| Band Color | gold |
| Band Material Type | Titanium |
| Battery Average Life | 8 days |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Battery cell composition | Lithium Polymer |
| Best Sellers Rank | #140 in Electronics ( See Top 100 in Electronics ) #1 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 | Slip On |
| Color | Gold |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone |
| Compatible Phone Models | Compatible with iOS and Android devices |
| Connectivity Technology | Bluetooth, USB |
| Connectivity technology | Bluetooth, USB |
| Country of Origin | Estonia |
| Customer Reviews | 4.0 out of 5 stars 5,804 Reviews |
| Display Type | Analog |
| GPS | No GPS |
| GPS Geotagging Functionality | No GPS |
| Global Trade Identification Number | 06430060153301 |
| Human Interface Input | Buttons |
| Item Dimensions | 24 x 24 x 7 millimeters |
| Item Dimensions D x W x H | 24D x 24W x 7H millimeters |
| Manufacturer | Oura |
| Metrics Measured | Optical, Accelerometer, Other Sensors |
| Model Name | Oura Ring 4 - Gold - Size 10 |
| Model Number | JZ90-54216-10 |
| Operating System | Proprietary OS |
| Operating system | Proprietary OS |
| Shape | Round |
| Special features | Heart Rate Monitor, Activity Tracker |
| Style Name | Minimalist |
| Supported Application | Apple Health |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adults |
| Warranty Description | 2 year manufacturer warranty |
| Warranty Type | Lifetime |
| 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, USB
- **Operating system:** Proprietary OS
- **Special features:** Heart Rate Monitor, Activity Tracker
- **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/51LkUIJiT8L.jpg)
![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 2](https://m.media-amazon.com/images/I/51Xzm0WbnTL.jpg)
![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 3](https://m.media-amazon.com/images/I/71QcZtuthvL.jpg)
![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 4](https://m.media-amazon.com/images/I/713l574H8CL.jpg)
![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 5](https://m.media-amazon.com/images/I/71P5sVTI6NL.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.

### ⭐ Only 90 days warranty! Check ASAP your device.
*by D***L on 9 February 2026*

Ring 4, ~3 months old, iPhone 16. Disconnects at least every 1–2 hours; when it happens, the app/phone can’t find the ring until I place it on the charger (charger LED turns on immediately). Completed soft reset + factory reset + full re-pair (forgot device in iPhone Bluetooth) — issue persists. Battery now drains within a single day. Please check diagnostics and advise warranty replacement if hardware/battery issue is suspected.

## Frequently Bought Together

- Oura Ring 4 - Gold - 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
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- sylacor Ring Cover for Oura Ring Gen 4/ Gen 3, Anti-Scratch Elastic Silicone Oura Ring Case Protector for Men Women Working Out Gym

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**Shop now:** [https://www.desertcart.com.br/products/675769619-oura-ring-4-smart-ring-size-first-with-oura-ring](https://www.desertcart.com.br/products/675769619-oura-ring-4-smart-ring-size-first-with-oura-ring)

---

*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-02-28*