---
product_id: 698086828
title: "Ring 4 - Silver - Size 8 - Size Before You Buy"
brand: "oura"
price: "€ 540.42"
currency: EUR
in_stock: true
reviews_count: 6
category: "Oura"
url: https://www.desertcart.de/products/698086828-ring-4-silver-size-8-size-before-you-buy
store_origin: DE
region: Germany
---

# 8-day battery life Water resistant up to 328 ft 80 min wireless charge Ring 4 - Silver - Size 8 - Size Before You Buy

**Brand:** oura
**Price:** € 540.42
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Ring 4 - Silver - Size 8 - Size Before You Buy by oura
- **How much does it cost?** € 540.42 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/698086828-ring-4-silver-size-8-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

- • **Dive in, stay tracked:** IP68 water resistance means your ring works rain or shine, pool or ocean.
- • **All-day power, no pause:** Up to 8 days battery life keeps you connected without interruption.
- • **Seamless health insights:** Advanced sensors monitor heart rate, sleep, and activity with precision.
- • **Smartphone synced wellness:** Bluetooth connectivity delivers real-time data and deep analytics via the Oura app.
- • **Effortless style, perfect fit:** Multiple sizes and sleek titanium finishes for a personalized, modern look.

## Overview

The Oura Ring 4 is a sleek, titanium smart ring designed for adults seeking advanced health tracking in a stylish, compact form. It offers continuous heart rate, sleep, and activity monitoring, boasts an 8-day battery life with fast wireless charging, and is water resistant up to 328 feet. Compatible with all current iPhone and Android devices, it syncs seamlessly via Bluetooth to provide detailed wellness insights through its dedicated app. Available in multiple sizes and finishes, it combines cutting-edge technology with everyday comfort and durability.

## Description

Oura Ring 4 Sizing Kit Oura Ring 4

Review: Replaced my fitness watch !! - Love it. Would recommend to anyone. Particularly females. So much information, tracks multiple thing. Including workouts - slight downside is integration to Strava isn’t great but okay. Took while to get used to the feel but finding so much better than a watch.
Review: 購入後3ヶ月ほどで不具合に遭遇も交換対応がスムーズでした - desertcart で購入後、3ヶ月ほどでバッテリー周りの不具合に遭遇しました。症状としては充電台から離すとすぐにスマートフォンとのペアリングが解除されてしまうというものでした。 Oura Ring のヘルプセンターの右下にチャットボットがあり AI なのでありきたりな回答なのかと思えばそうではなく - 症状を入力 - 普段使用している Oura アプリのアカウントのメールアドレスを聞かれるので入力。該当メールアドレス宛に確認メールが来るので承認 - 交換対象製品を確認 & 交換品の送付先を入力 という、ほぼ 3 ステップで交換対応の申請が完了し、1時間程度で無料扱いの注文完了メールが届きました。 指輪タイプのデバイスはバッテリー周りの不具合遭遇率が高く懸念していましたが、スムーズに交換対応が行えたのでとても良かったですし、これぐらい交換対応がスムーズなのであれば月々払っている Oura の高額なサブスク代も半額分ぐらいは Apple Care みたいな保険代だと思えば割と納得感があるなと今回のトラブル発生から一連の手続きで思いました。

## Features

- Compact and intelligent design for comfortable everyday wear
- Advanced health monitoring capabilities, including heart rate, sleep patterns, and activity tracking
- Long battery life with convenient wireless charging
- Seamless smartphone app integration for detailed health and activity analytics
- Available in multiple finishes and sizes for personalized style

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D9WVTHPV |
| Age Range Description | Adult |
| Band Colour | Stealth |
| Band Material Type | Titanium |
| Battery Average Life | 8 days |
| Battery Capacity | 800 |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Best Sellers Rank | 41,675 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 111 in Wearable Tech Rings |
| Box Contents | Information Booklet, Oura Ring 4, Oura Ring 4 Charger, Quick Start Guide, USB-C Cable |
| Brand Name | OURA |
| Case Material Type | Titanium |
| Closure Type | Continuous |
| Colour | Stealth |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone, Tablet |
| Compatible Phone Models | All current iPhone models, all current Android models |
| Connectivity Technology | Bluetooth |
| Customer Reviews | 4.2 out of 5 stars 44 Reviews |
| Display Type | No Display |
| GPS Geotagging Functionality | No GPS |
| Human Interface Input | Unknown |
| Item Dimensions | 28 x 28 x 8 millimetres |
| Item Dimensions D x W x H | 28D x 28W x 8H millimetres |
| Item Weight | 0.19 Kilograms |
| Manufacturer | Oura |
| Metrics Measured | Heart Rate Monitor and Sleep Duration |
| Model Name | Oura Ring 4 - Stealth - Size 7 |
| Model Number | JZ90-54218-07 |
| Operating System | Android |
| Product Features | Activity Tracker |
| Product Warranty | 3 year manufacturer warranty |
| Shape | Ring |
| Sport Type | Multi-Sports |
| Style Name | Modern |
| Supported Application | Fitness Tracker |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adults |
| Warranty Type | Limited |
| Water Resistance Depth | 328 Feet |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IP68 |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |

## Product Details

- **Battery capacity:** 800
- **Battery cell composition:** Lithium Polymer
- **Brand:** OURA
- **Connectivity technology:** Bluetooth
- **GPS:** No GPS
- **Model name:** Oura Ring 4 - Stealth - Size 7
- **Operating system:** Android
- **Shape:** Ring
- **Special feature:** Activity Tracker
- **Wireless communication standard:** Bluetooth

## Images

![Ring 4 - Silver - Size 8 - Size Before You Buy - Image 1](https://m.media-amazon.com/images/I/51NatpBotdL.jpg)

## Available Options

This product comes in different **Color, Size, Style** 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

### ⭐⭐⭐⭐⭐ Replaced my fitness watch !!
*by V***T on 6 June 2026*

Love it. Would recommend to anyone. Particularly females. So much information, tracks multiple thing. Including workouts - slight downside is integration to Strava isn’t great but okay. Took while to get used to the feel but finding so much better than a watch.

### ⭐⭐⭐⭐⭐ 購入後3ヶ月ほどで不具合に遭遇も交換対応がスムーズでした
*by M***O on 13 October 2025*

Amazon で購入後、3ヶ月ほどでバッテリー周りの不具合に遭遇しました。症状としては充電台から離すとすぐにスマートフォンとのペアリングが解除されてしまうというものでした。 Oura Ring のヘルプセンターの右下にチャットボットがあり AI なのでありきたりな回答なのかと思えばそうではなく - 症状を入力 - 普段使用している Oura アプリのアカウントのメールアドレスを聞かれるので入力。該当メールアドレス宛に確認メールが来るので承認 - 交換対象製品を確認 & 交換品の送付先を入力 という、ほぼ 3 ステップで交換対応の申請が完了し、1時間程度で無料扱いの注文完了メールが届きました。 指輪タイプのデバイスはバッテリー周りの不具合遭遇率が高く懸念していましたが、スムーズに交換対応が行えたのでとても良かったですし、これぐらい交換対応がスムーズなのであれば月々払っている Oura の高額なサブスク代も半額分ぐらいは Apple Care みたいな保険代だと思えば割と納得感があるなと今回のトラブル発生から一連の手続きで思いました。

### ⭐⭐⭐ Reviewing charge and scratches/damages
*by J***N on 23 January 2025*

*It’s now been 1.5 years since I’ve had the ring. The charges are lasting about a day and a half. I charged this ring at 8 pm last night and at 4 pm today, I received a message that my ring only had 23 hours of battery left. I bought the ring because I didn’t want a health tracker that needed to be charged daily, like my Apple Watch. I’m not sure if I’ll be purchasing a new ring from Oura. I will be looking into the ringconn or ultrahuman. *I’ve had the ring for 6 months now and find myself charging it every four days. The palm side is slightly scratched. The is my third Oura ring 4. The first 2 I bought were the gold and rose gold. I returned the gold one almost immediately and ordered the rose gold. The gold looked cheap and brassy compared to my other gold jewelry. The rose gold was almost perfect. After a day of normal use, I could already see scratches. After a week of use, it was covered in scratches and had began to change color. I know the color change on the rose gold is normal, but I expected it maybe after 6 plus months of using it. I currently have the stealth. I wanted the black one, but I didn’t want to wait a few weeks for delivery. So I ordered the stealth and the color has grown on me. I’ve had it for 10 days now and I plan on keeping it. The charge is supposed to last up to 8 days, but I find that to not be true. The first charge lasted 5 days. (I still charge it less than my Apple Watch.) I’m on day 5 of the 2nd charge and I think I’ll have to charge it by tomorrow- day 6. I turned off the oxygen sensor because I heard that used up the battery and I’m only getting an extra day of charge. Also, I only let it go down to 18-20 percent. If it’s under 20 percent you won’t get accurate overnight readings. I feel like the stealth and the brushed silver are probably the best rings to purchase if you are worried about scratches and color changes. My ring currently has zero scratches after 10 days of usage. I’m leaving my rating at 4 stars because I really wanted the rose gold ring to work :/.

## Frequently Bought Together

- Oura Ring 4 - Stealth - 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

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-07-13*