---
product_id: 661489110
title: "Ring 4 - Stealth - Size 13 - Size Before You Buy"
brand: "oura"
price: "HK$5285"
currency: HKD
in_stock: true
reviews_count: 5
url: https://www.desertcart.hk/products/661489110-ring-4-stealth-size-13-size-before-you-buy
store_origin: HK
region: Hong Kong
---

# 8-day battery life Water resistant titanium build Tracks 50+ health metrics Ring 4 - Stealth - Size 13 - Size Before You Buy

**Brand:** oura
**Price:** HK$5285
**Availability:** ✅ In Stock

## Summary

> 💍 Own your health, invisibly and effortlessly.

## Quick Answers

- **What is this?** Ring 4 - Stealth - Size 13 - Size Before You Buy by oura
- **How much does it cost?** HK$5285 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/661489110-ring-4-stealth-size-13-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

- • **Long-Lasting Freedom:** Up to 8 days battery life means you stay unplugged and in the moment.
- • **All-Titanium Durability:** Sleek, stealthy, and built to last with a featherlight feel for 24/7 wear.
- • **Smart Sensing Precision:** Adaptive tech delivers hyper-accurate insights on sleep, stress, heart & more.
- • **Seamless App Integration:** Syncs with 40+ apps like Apple Health & Strava for a holistic health ecosystem.
- • **Effortless Sizing Experience:** Size Before You Buy kit ensures the perfect fit—because comfort is key.

## Overview

The Oura Ring 4 Stealth is a cutting-edge smart ring crafted from durable titanium, designed for continuous 24/7 wear. It tracks over 50 health metrics with adaptive Smart Sensing technology, offering precise insights into sleep, activity, stress, and heart health. Featuring up to 8 days of battery life and water resistance, it integrates seamlessly with popular health apps. The unique Size Before You Buy kit guarantees a perfect fit, making it the ultimate discreet health companion for professionals seeking data-driven wellness.

## Description

Introducing Oura Ring 4: the latest evolution of the revolutionary smart ring. Oura Ring 4 brings you closer to what matters most — your health. The updated all-titanium design is powered by Smart Sensing, a new sensing platform that doesn’t just measure your biometrics, it adapts to you, providing insights into over 50 health metrics including sleep, readiness, activity, heart health, stress, metabolic health, and women’s health. Oura Ring quietly and comfortably monitors your health and with 5 to 8 days of battery life — you can forget it’s even on. With multi-ring support, change Oura Ring 4 styles as easily as changing your outfit. If you have two or more Oura Ring 4 styles, you can now switch easily between different finishes in the Oura App. Sleeker, smarter and more accurate than ever, Oura Ring 4 is made for you. Oura Ring is FSA/HSA Eligible — we can accept FSA or HSA funds for the following: Oura Ring, additional chargers, and shipping. 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.

## Features

- SIZE BEFORE YOU BUY - Oura Ring 4 sizes are different from standard ring sizes. Size yourself with the Oura Ring 4 Sizing Kit. For additional details, see “From the manufacturer” section below
- 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.
- 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.
- SYNC WITH YOUR FAVORITE APPS - Compatible with iOS and Android — Oura seamlessly integrates with over 40 apps including Apple Health, Google Health Connect, Natural Cycles, Flo, Strava, & more.
- LOOKING FOR THE BEST HEALTH TRACKER? - Whether you’re searching for a sleep ring or fitness ring, Oura Ring 4 is for you — this revolutionary smart ring that allows you to discreetly track your sleep, activity, recovery and stress — in style.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Stealth |
| Battery Cell Type | Lithium Polymer |

## Product Details

- **Special Feature:** Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight
- **Connectivity Technology:** Bluetooth
- **Wireless Communication Standard:** Bluetooth
- **Battery Cell Composition:** Lithium Polymer
- **GPS:** GPS Via Smartphone
- **Shape:** Round
- **Brand:** OURA
- **Style:** Minimalist
- **Color:** Stealth
- **Target Audience:** Unisex Adults

## Images

![Ring 4 - Stealth - Size 13 - Size Before You Buy - Image 1](https://m.media-amazon.com/images/I/51-7ivDG+6L.jpg)
![Ring 4 - Stealth - Size 13 - Size Before You Buy - Image 2](https://m.media-amazon.com/images/I/51IDrh-0YEL.jpg)
![Ring 4 - Stealth - Size 13 - Size Before You Buy - Image 3](https://m.media-amazon.com/images/I/71l8InHaa7L.jpg)
![Ring 4 - Stealth - Size 13 - Size Before You Buy - Image 4](https://m.media-amazon.com/images/I/713l574H8CL.jpg)
![Ring 4 - Stealth - Size 13 - Size Before You Buy - Image 5](https://m.media-amazon.com/images/I/71H17unV-KL.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

### ⭐⭐⭐⭐⭐ Very Practical and Easy To Use
*by M***  on September 1, 2025*

This is my first Oura Ring purchase. It was very easy to set up the app and pair the ring. The ring fits well, it is durable and the smooth finish makes it comfortable to wear all day/night. I love that it is waterproof. My favorite feature is the “Find My Ring” feature. The health information the ring provides is overwhelming at first. Once you learn what each section means and how it all works together, it paints a picture of your health to discuss with your doctor. The ring does not replace your doctor but it assists in getting the conversation started. I highly recommend this stylish ring that prompts you to get up and move while tracking your metrics.

### ⭐⭐⭐⭐⭐ I love my Rose Gold Oura!
*by A***E on September 8, 2025*

I know the Oura Ring comes at a steep price but I truly think it is worth it. I have had it since February and I only ever take it off to charge it. The biggest con is that the rose gold coating has a few chips on the outer edges and I have scratched it up pretty good. I have put this ring through a lot though so I’m not that surprised. You can buy clear silicone “cases” for it but it dulled out the brightness of the color itself. I still get compliments on how pretty it is even though I have been rough with it. The first week wearing it was an adjustment. At first it felt heavy and bulky but after the second week I stopped noticing it. I got a size 8 and it’s the perfect fit and feels comfortable. It doesn’t ever slip off but it’s easy to remove. My main reason for getting the Oura Ring was to help me keep track of my cycles and ovulation. I love the app and everything it has to offer. Overall the quality is great and I recommend this ring to all of my family and friends.

### ⭐ Read this review if you are considering the Oura ring!
*by K***S on June 7, 2025*

Let me start by saying I REALLY wanted to like this ring! I wouldn’t have spent so much money on it if I wasn’t all in!My first disappointment came from, just learning/realizing that the ring did not have the functionality that, I had understood it to have.Does it track your heart rate?Mmmmm… sort of. If you are hoping for it to track your heart rate while you are exercising, you are going to be sorely disappointed. It does heart rate readings every 10 to 30 minutes. No matter what you’re doing. That is one reading every 10 to 30 minutes… Which by the way you have no control of so it might be 10, it might be . So if you’re hoping to capture your peak heart rate while you are exercising, good luck. There is a function where you can record your workout and, I thought maybe that would be a workaround but no, all that really does is, record your path with GPS tracking to give you a visual of the route you took. And it’ll take a couple heart rate readings but, again, not at any meaningful regular interval while you are exercising. There is a manual function to check your heart rate which, has to be selected in the app and then it asks you to stay still for 30 seconds so that it can take your heart rate… And again, if you’re exercising, and you want your heart rate being tracked, you can’t stop everything and pull out your phone every few minutes to force it to take a reading. And, don’t forget, to also stop and be still so that it can take the reading.🤦‍♀️Does it detect when you are stressed?One of the features this ring boasts is, tracking your stress. Supposedly, your body gives off particular signals when you are stressed and, the App puts a lot of focus on the amount of stress that you’ve had during your day. The problem is, it’s wildly inaccurate. It goes further to say that, eating, exercising, or doing things you enjoy can all give off those same signals as stress lol so, it’s not really a very useful metric for anything IMO. It will say I am stressed when I am eating, when I am exercising, but even when I am doing something relaxing and enjoyable like, in my garden interestingly enough, it has correctly detected a few times that I got particular news that sent my stress levels way up. It did pick those up. But, again, how useful is it if, it picks up so much of everything else as stress also 😆 I mean unless you are just a slug and lay around all day, it’s going to report that you had stress throughout the day 🤷‍♀️And how about that subscription? Does the ring give basic metrics without the subscription?No. Big fat no. This is my biggest problem with this ring. I didn’t know if I felt like that the subscription would be valuable enough to me so I made sure before I purchased it that, if I didn’t want the extras of the subscription that the ring would still continue to track the most basic things like, step count. And, it reports that it does do that. HOWEVER, what they fail to mention is that, they don’t make that data available for you to see anywhere anymore lol and, it no longer updates Apple health or whatever other app you are integrating in with. So, it does NOTHING without the subscription. The only thing it will do is give you these silly readiness scores for your day. If it feels like you got a good nights sleep then it will give you a good readiness score for the day and a good sleep score. But you will see absolutely none of the data that went into building that score. No more steps, no more heart rate, no more anything. That’s IT. You can buy a ring for a fraction of the price that gives you all way more functionality, WITHOUT a Subscription. The way they make it sound before you purchase is that the subscription gives you a lot of extras. And I was willing to pay that if I felt like those extras were really valuable but because the data is so wildly inaccurate, I didn’t feel like it was particularly valuable what I thought I was getting as an “extra” From the subscription. Had I known it wouldn’t do the most basic thing to count steps without a subscription, and actually show them to me either in the app or by writing them to Apple health, I would have never purchased this ring.You’ve been warned! Good luck!

## Frequently Bought Together

- Oura Ring 4 - Stealth - Size 13 - 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 13 - Charging Dock and USB-C Cable - Charges Oura Ring 4 up to 8 Days

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-30*