---
product_id: 725327900
title: "Oura Ring Generation 4 Smart Ring - Silver - Size 7 | SIZE CHECK FIRST: Includes Exclusive Size Kit | Monitor Sleep, Heart Rate & Fitness | Battery Lasts Up to 8 Days"
brand: "oura"
price: "2017023721₫"
currency: VND
in_stock: false
reviews_count: 13
url: https://www.desertcart.vn/products/725327900-oura-ring-generation-4-smart-ring-silver-size-7-size
store_origin: VN
region: Vietnam
---

# 8-day battery life 100m waterproof titanium build 30+ biometric health metrics Oura Ring Generation 4 Smart Ring - Silver - Size 7 | SIZE CHECK FIRST: Includes Exclusive Size Kit | Monitor Sleep, Heart Rate & Fitness | Battery Lasts Up to 8 Days

**Brand:** oura
**Price:** 2017023721₫
**Availability:** ❌ Out of Stock

## Summary

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

## Quick Answers

- **What is this?** Oura Ring Generation 4 Smart Ring - Silver - Size 7 | SIZE CHECK FIRST: Includes Exclusive Size Kit | Monitor Sleep, Heart Rate & Fitness | Battery Lasts Up to 8 Days by oura
- **How much does it cost?** 2017023721₫ with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/725327900-oura-ring-generation-4-smart-ring-silver-size-7-size)

## 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

- • **Unplug & Go:** Up to 8 days of battery life means you stay connected to your health without daily charging anxiety.
- • **All-Day Health HQ:** Track 30+ biometrics including sleep, heart rate, stress, and women’s health with cutting-edge sensors.
- • **Precision Fit, Zero Guesswork:** Exclusive sizing kit ensures your Oura Ring fits like a glove—comfort meets accuracy.
- • **Titanium Tough, Feather Light:** Aerospace-grade titanium offers unmatched durability and comfort for 24/7 wear—even underwater.
- • **Seamless Style Meets Smart Tech:** Sleek silver design that’s subtle enough for boardrooms and bold enough for weekend adventures.

## Overview

The Oura Ring Generation 4 is a sleek, silver smart ring crafted from aerospace-grade titanium, designed for continuous 24/7 health monitoring. It tracks over 30 biometric metrics including sleep, heart rate, stress, and women’s health indicators with outstanding accuracy. Featuring a waterproof design and an impressive 8-day battery life, it offers a perfect blend of durability, comfort, and cutting-edge wellness technology. Comes with an exclusive sizing kit to guarantee the perfect fit and includes a 1,500 yen credit for future purchases.

## Description

Introducing the Oura Ring 4 — the next generation smart ring that has evolved. With your health first, the Oura Ring 4 has a new design made from all titanium, and "smart sensing" that adapts to you beyond just measures. Quietly and comfortably monitor over 30 biometrics including sleep, recovery, activity, heart health, stress, and women's health. With up to 8 days of battery life, you'll forget you have it on.

Review: Works great - Thought it would be more chunky but it’s not. Accurately tracks my workout heart rate and sleep
Review: 運動記録用として購入しました。(5ヶ月継続中) 体調の検知は正確で、運動量の計測は概ね信じれる内容でまとまっており、大きな不具合ないので満足してます。 ストレス検知についてだけは、ゲームをしていてもリラックスして動画を見ていてもすぐにストレス判定されがちなので自分の心に従って無視してます。 サイジングキットでサイズ合わせ数日試着した上で購入してますが、本体購入後、浮腫んでいたのが解消されると数日で指が細くなったのかスカスカに落ちそうになったり、現在は装着する指を変えたり運動しすぎないように気をつけてますが 公式サイト的には人差し指に装着を推奨してますが、痩せやすい方は中指でサイズ合わせをお勧めします。

## Features

- 【 MEASURE THE SIZE BEFORE PURCHASING 】 - The size of the Oura Ring 4th Generation differs from the general ring size By measuring with the dedicated size kit before purchase, you can find the perfect size Additionally, you will receive a 1,500 yen desertcart credit that can be used for future purchases of the Oura Ring
- 【 Outstanding Accuracy 】 - Oura tracks over 20 health metrics including sleep, activity, stress, heart health, and women's health indicators By utilizing cutting-edge sensing technology, it adapts to the unique physiological functions of the user, providing accurate and continuous data throughout 24 hours
- 【 Long-lasting Battery 】 - With up to 8 days of battery life, without screen or vibration, the Oura Ring 4 enables mindfulness From workouts to evening outings, you can be free and forget you are wearing it Until you start getting compliments
- 【 24-hour wear design 】 - The updated design of the Oura Ring 4 is more comfortable and fits better than ever, with 100m waterproof performance One of the toughest materials on Earth, aerospace-grade titanium combines a gentle touch for sensitive skin with exceptional durability

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D9WW6RPJ |
| Amazon Bestseller | #753 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #2 in Activity & Fitness Trackers |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Color | Silver |
| Connectivity technologies | Bluetooth |
| Customer Reviews | 4.1 4.1 out of 5 stars (6,683) |
| Date First Available | July 16, 2025 |
| GPS | No GPS |
| Human Interface Input | Buttons |
| Item Weight | 180 g |
| Item model number | JZ90-54217-07 |
| Other display features | Wireless |
| Product Dimensions | 2.4 x 2.4 x 0.7 cm; 180 g |
| Special features | Activity Tracker |
| Whats in the box | Oura Ring 8 Charger, USB Cable, Information Booklet, Quick Start Guide |

## Product Details

- **Battery Cell Composition:** Lithium Polymer
- **Connectivity Technology:** Bluetooth
- **Memory Storage Capacity:** 4 GB
- **Special Feature:** Activity Tracker
- **Wireless Communication Standard:** Bluetooth

## Images

![Oura Ring Generation 4 Smart Ring - Silver - Size 7 | SIZE CHECK FIRST: Includes Exclusive Size Kit | Monitor Sleep, Heart Rate & Fitness | Battery Lasts Up to 8 Days - Image 1](https://m.media-amazon.com/images/I/61VwOjlW1AL.jpg)
![Oura Ring Generation 4 Smart Ring - Silver - Size 7 | SIZE CHECK FIRST: Includes Exclusive Size Kit | Monitor Sleep, Heart Rate & Fitness | Battery Lasts Up to 8 Days - Image 2](https://m.media-amazon.com/images/I/71HkfJUj31L.jpg)
![Oura Ring Generation 4 Smart Ring - Silver - Size 7 | SIZE CHECK FIRST: Includes Exclusive Size Kit | Monitor Sleep, Heart Rate & Fitness | Battery Lasts Up to 8 Days - Image 3](https://m.media-amazon.com/images/I/71fy0vF-LRL.jpg)
![Oura Ring Generation 4 Smart Ring - Silver - Size 7 | SIZE CHECK FIRST: Includes Exclusive Size Kit | Monitor Sleep, Heart Rate & Fitness | Battery Lasts Up to 8 Days - Image 4](https://m.media-amazon.com/images/I/71+93pu7TrL.jpg)
![Oura Ring Generation 4 Smart Ring - Silver - Size 7 | SIZE CHECK FIRST: Includes Exclusive Size Kit | Monitor Sleep, Heart Rate & Fitness | Battery Lasts Up to 8 Days - Image 5](https://m.media-amazon.com/images/I/71AtLXpBl7L.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

### ⭐⭐⭐⭐⭐ Works great
*by P***Y on February 13, 2026*

Thought it would be more chunky but it’s not. Accurately tracks my workout heart rate and sleep

### ⭐⭐⭐⭐⭐ Review
*by M***I on December 30, 2025*

運動記録用として購入しました。(5ヶ月継続中) 体調の検知は正確で、運動量の計測は概ね信じれる内容でまとまっており、大きな不具合ないので満足してます。 ストレス検知についてだけは、ゲームをしていてもリラックスして動画を見ていてもすぐにストレス判定されがちなので自分の心に従って無視してます。 サイジングキットでサイズ合わせ数日試着した上で購入してますが、本体購入後、浮腫んでいたのが解消されると数日で指が細くなったのかスカスカに落ちそうになったり、現在は装着する指を変えたり運動しすぎないように気をつけてますが 公式サイト的には人差し指に装着を推奨してますが、痩せやすい方は中指でサイズ合わせをお勧めします。

### ⭐⭐⭐⭐⭐ Review
*by ユ***ウ on February 14, 2026*

Ring 4は、“感覚を数値で裏付けてくれる”デバイス。 HRVベースの回復スコアと日中ストレスの精度が高く、体感とのズレがほとんどありません。 「今日は無理しない」「今日は攻める」――その判断が迷わなくなります。 派手さはないけれど、本気でコンディションを整えたい人には、かなり頼れる存在です。 また、体表温のわずかな変動や安静時心拍の微差まで拾ってくれるため、体調の“崩れる前段階”に気づきやすいのも強み。睡眠スコアそのものより、長期トレンドでの変化確認に価値を感じています。 アプリは情報量が多いものの、深掘りしたい人には十分なデータ解像度があり、数値を根拠に生活を微調整できる設計。感覚論ではなく、コンディション管理をロジカルに行いたい人には納得感のあるデバイスです。 正直なところ、製品自体にはとても満足していますが、サイズに関してはかなり悩ましい経験でした。タイトルにあるのは、正にそこです！ サイジングキットを購入し、むくみも考慮して数日間つけ続けたうえで注文しました。しかし実際に届いたリングは、素材や質感の違いもあり、着用感が微妙に異なり、結果的にワンサイズ大きく感じてしまいました。想像以上にブカブカで、やむなく返品することに。 返送料がかかるのは理解できます。ただ、開封済みという理由で返品手数料が半額以上差し引かれる点には、正直納得しづらさが残りました。サイズ確認のためには開封せざるを得ませんし、実際に指にはめなければサイズ違いには気づけないからです。 もちろん衛生面や再販不可の事情があることは理解しています。ただ、それならなおさら、サイジングキットと実物の装着感の差をできるだけなくす工夫や、より精度の高い計測方法を用意してほしいと感じました。 製品が良いだけに、サイズ選びと返品ポリシーの部分がもう少し柔軟であれば、さらに安心して購入できるのに、というのが率直な感想です。 Oura Ring 4はおすすめできますが、Amazonでの購入は強く推奨しません。 まず試着出来る電化製品店や、公式で購入した方が良いです。

## Frequently Bought Together

- Oura Ring 4 - Silver - Size 7 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life
- sylacor Ring Cover for Oura Ring Gen 4/ Gen 3, Anti-Scratch Elastic Silicone Oura Ring Case Protector for Men Women Working Out Gym
- 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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---

*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-28*