---
product_id: 661340293
title: "Ring 4 - Stealth - Size 10 - Size Before You Buy"
brand: "oura"
price: "$U37408"
currency: UYU
in_stock: true
reviews_count: 13
category: "Oura"
url: https://www.desertcart.uy/products/661340293-ring-4-stealth-size-10-size-before-you-buy
store_origin: UY
region: Uruguay
---

# 8-day battery life 50+ health metrics tracked Smart Sensing adaptive tech Ring 4 - Stealth - Size 10 - Size Before You Buy

**Brand:** oura
**Price:** $U37408
**Availability:** ✅ In Stock

## Summary

> 💍 Elevate your health game with stealthy precision and effortless style.

## Quick Answers

- **What is this?** Ring 4 - Stealth - Size 10 - Size Before You Buy by oura
- **How much does it cost?** $U37408 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/661340293-ring-4-stealth-size-10-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

- • **Data-Driven Wellness:** Track over 50 health metrics including sleep, stress, heart, and women’s health with cutting-edge Smart Sensing technology.
- • **Effortless All-Day Wear:** Lightweight ceramic design with recessed sensors offers sleek style and comfort, even on sensitive skin.
- • **Stay Powered, Stay Present:** Up to 8 days of battery life means no constant charging—focus on your life, not your device.
- • **Precision Fit, No Guesswork:** Unique sizing kit ensures your perfect Oura Ring 4 fit before you buy—because comfort is non-negotiable.
- • **Health Investment That Pays Off:** FSA/HSA eligible purchase with included first-month membership—your wellness journey starts smart and affordable.

## Overview

The Oura Ring 4 Stealth is a sleek, lightweight smart ring crafted from durable ceramic, designed to track over 50 health metrics with adaptive Smart Sensing technology. Featuring up to 8 days of battery life and a unique sizing system, it offers personalized wellness insights through the Oura app. FSA/HSA eligible and including a free first-month membership, it blends cutting-edge health tracking with refined everyday wearability.

## Description

Oura Ring 4 Ceramic is a modern expression of our revolutionary smart ring technology, blending refined elegance with everyday durability. The high-performance ceramic exterior is designed to keep up with you. The Ceramic Collection is available in sizes 4-15 and three unique colors: Petal, Tide and Cloud. Each new color is built to accent your style and personality. This colorful new take comes with the same cutting-edge technology of Oura Ring 4. Track over 50 health metrics and get personalized insights into your sleep, activity, readiness, stress, heart health, metabolic health, women's health and more. It is built around a breakthrough sensing technology, Smart Sensing, which adapts to your finger to deliver accurate, continuous data. With 5-8 days of battery life, you'll see a complete picture of your health. It's designed with recessed sensors on the interior, making it comfortable and gentle, even on sensitive skin. Oura Ring is FSA/HSA Eligible — we can accept FSA or HSA funds for the following: Oura Ring, additional chargers, and shipping. Oura Ring 4 Ceramic Polishing Pad: Keep your Oura Ring 4 Ceramic looking like new with the Ceramic Polishing Pad, redeemable once you sync your purchase in the Oura App. Due to the hardness of the zirconia ceramic, it can take on the color of softer metals, like a dumbbell or cookware. Over time, you may notice grey marks on your Oura Ring 4 Ceramic. Rest assured, it's not damaged — it's evidence of a metal transfer and easy to remove with proper cleaning. Use caution when handling metal objects and consider removing your Oura Ring for some activities. The Oura Ring 4 Ceramic Polishing Pad is your partner in keeping your ring in top condition. IMPORTANT: Size yourself with the Oura Ring Sizing Kit before you buy — Oura Rings are not US standard sizing, and finding the right size will result in the best experience possible. With a sizing kit purchase, a credit will automatically be applied to your Oura Ring at checkout.

Review: Obsessed! - The Oura Ring 4 is sleek, lightweight, and comfortable enough to wear all day and night. Sleep tracking and readiness data feel accurate and genuinely useful, especially once you build a few weeks of history. The Stealth finish looks subtle and doesn’t draw attention. Expensive, but the insights and build quality make it feel worth it.
Review: Avoid! Oura has F on BBB! - BEWARE! This company has an F on the BBB- This is the second Oura ring we purchased, my son is obsessed with health and talked our ears off about an Oura ring, so we bought him one (3rd Gen) which ended up not performing like it should, so we bought him this one, 4th Generation. He loved it so much when it worked, but the battery was defective and started crapping out within months. Tried to contact Oura several times but their customer service care is non existent and abysmal. Left messages, chat, but no one got back to us and of course at this point it was past desertcart's 30 day return window. We contacted desertcart who provided us with Oura's customer service number and escalated the issue... still unsure what that means. But after dropping almost 1K on two rings and zero resolution, we don't recommend them to anyone.

## Features

- ACCURATE SIZING ESSENTIAL - Oura Ring 4 uses unique sizing different from standard jewelry rings; use the Oura Ring 4 Sizing Kit to find your perfect fit before purchasing
- OURA MEMBERSHIP - First month of membership is included with purchase, for new members only. Subscription is 5.99/mo afterwards. Or opt for the annual prepaid option for 69.99. Membership is tied to your account via the Oura App, not your physical ring
- ACCURACY - SMART SENSING - Oura tracks over 50 health metrics, 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
- HSA/FSA ELIGIBLE - We can accept HSA or FSA funds for the following: Oura Ring, additional chargers, and shipping

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D9WVKWXN |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Best Sellers Rank | #4,724 in Electronics ( See Top 100 in Electronics ) #24 in Smart Rings |
| Color | Stealth |
| Connectivity technologies | Bluetooth |
| Customer Reviews | 3.8 3.8 out of 5 stars (151) |
| Date First Available | October 3, 2024 |
| GPS | GPS Via Smartphone |
| Human Interface Input | Touchscreen |
| Item Weight | 6.3 ounces |
| Item model number | JZ90-54218-10 |
| Manufacturer | Oura |
| OS | i_os, android |
| Other display features | Wireless |
| Product Dimensions | 0.94 x 0.94 x 0.31 inches |
| Special features | Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight |
| Weight | 6.3 Ounces |
| Whats in the box | Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide |

## Product Details

- **Battery Capacity:** 18
- **Battery Cell Composition:** Lithium Polymer
- **Brand:** OURA
- **Connectivity Technology:** Bluetooth
- **GPS:** GPS Via Smartphone
- **Operating System:** i_os, android
- **Shape:** Round
- **Special Feature:** Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight
- **Style:** Metallic
- **Wireless Communication Standard:** Bluetooth

## Images

![Ring 4 - Stealth - Size 10 - Size Before You Buy - Image 1](https://m.media-amazon.com/images/I/51-7ivDG+6L.jpg)

## 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

### ⭐⭐⭐⭐⭐ Obsessed!
*by L***S on February 4, 2026*

The Oura Ring 4 is sleek, lightweight, and comfortable enough to wear all day and night. Sleep tracking and readiness data feel accurate and genuinely useful, especially once you build a few weeks of history. The Stealth finish looks subtle and doesn’t draw attention. Expensive, but the insights and build quality make it feel worth it.

### ⭐ Avoid! Oura has F on BBB!
*by N***D on November 28, 2025*

BEWARE! This company has an F on the BBB- This is the second Oura ring we purchased, my son is obsessed with health and talked our ears off about an Oura ring, so we bought him one (3rd Gen) which ended up not performing like it should, so we bought him this one, 4th Generation. He loved it so much when it worked, but the battery was defective and started crapping out within months. Tried to contact Oura several times but their customer service care is non existent and abysmal. Left messages, chat, but no one got back to us and of course at this point it was past Amazon's 30 day return window. We contacted Amazon who provided us with Oura's customer service number and escalated the issue... still unsure what that means. But after dropping almost 1K on two rings and zero resolution, we don't recommend them to anyone.

### ⭐⭐⭐⭐⭐ Wish I bought this sooner
*by H***8 on May 14, 2025*

I’ve had my Oura ring for about 2 weeks now, and so far I love it. I bought a “random” cheaper ring first, because the price tag and subscription for Oura turned me off, but the other one didn’t work. I returned it and figured I’d try this. First off, get the sizing kit. If you try to guess based off of other rings, you’ll probably be disappointed. I sized it off of my pointer finger, with the intent to move it to smaller fingers as I start losing weight. (I have no interest in having to buy multiple rings if I can avoid it.) It can be worn on either hand, so I have lots of options to swap too as I hit my goals. The ring isn’t tiny, but it’s not obstructive. I’ve gotten used to it and it doesn’t bother me at all. I can shower with it on, wash my hands, go swimming…all the things. As for the tech and the app, super user friendly and easy to use. Everything is pretty intuitive and the data that doesn’t automatically make sense comes with explanations. You can see how everything ties together. Its predictive nature is also 2-for-2 for me. It’s reads your data in its entirety and tells you when things are a little off. I got a warning one morning when I woke up, and spiked a fever that evening. It’s also accurately predicted the timing of other things that women may find useful. One of the main reasons for me getting the Oura was to track sleep. In my opinion, it’s been pretty spot on. If I feel like I’ve laid in bed all night staring at the ceiling, my data matches that. If I feel like I passed out as soon as my head hit the pillow, the data matches it. When I wake up feeling super refreshed, and check the app, it says I slept well. When I wake up feeling like crap, surprise! The app says I slept horribly. From there, it sets your activity target for the day - based on how rested your body is. All in all, I am very happy with my purchase. Only regret is that I spent so long deciding if I really wanted it or not. But, I guess the good thing is that it seems like this model (Oura 4) has fixed a lot of problems some of the older models had. Definitely recommend!

## Frequently Bought Together

- Oura Ring 4 - Stealth - 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
- Oura Ring 4 Charger - Size 10 - Charging Dock and USB-C Cable - Charges Oura Ring 4 up to 8 Days
- 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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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-03-05*