---
product_id: 661244395
title: "OURA Ring 4 Smart Ring - Stealth - Size 11"
brand: "oura"
price: "¥111834"
currency: JPY
in_stock: false
category: "Oura"
url: https://www.desertcart.jp/products/661244395-oura-ring-4-smart-ring-stealth-size-11
store_origin: JP
region: Japan
---

# 8-day battery life Waterproof IP68 rating Tracks 50+ health metrics OURA Ring 4 Smart Ring - Stealth - Size 11

**Brand:** oura
**Price:** ¥111834
**Availability:** ❌ Out of Stock

## Summary

> 💍 Own your health, invisibly powerful.

## Quick Answers

- **What is this?** OURA Ring 4 Smart Ring - Stealth - Size 11 by oura
- **How much does it cost?** ¥111834 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/661244395-oura-ring-4-smart-ring-stealth-size-11)

## 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 freedom from constant charging and distractions.
- • **Effortless All-Day Wear:** Sleek titanium design with stealth finish, built for comfort and style from workouts to nights out.
- • **Seamless Multi-Ring Style:** Switch between multiple Oura Ring 4 finishes via the app to match your vibe and mood.
- • **Health Investment Made Easy:** HSA/FSA eligible and includes a free first-month membership to unlock premium health analytics.
- • **Precision Meets Adaptability:** Smart Sensing tech delivers personalized, continuous health insights tailored to you.

## Overview

The Oura Ring 4 Stealth is a cutting-edge smart ring crafted from titanium, featuring Smart Sensing technology that tracks over 50 health metrics including sleep, heart health, stress, and women’s health. It offers up to 8 days of battery life, is waterproof with an IP68 rating, and supports seamless style changes via the app. Designed for professionals who demand accuracy and elegance, it also includes a free first-month membership and is HSA/FSA eligible.

## 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.

## Features

- 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
- 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
- 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
- OURA MEMBERSHIP - First month of membership is included with purchase, for new members only. Subscription is 5.99/mo afterwards. Membership is tied to your account via the Oura App, not your physical ring
- HSA/FSA ELIGIBLE - We can accept HSA or FSA funds for the following: Oura Ring, additional chargers, and shipping

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D9WWHXHH |
| Additional Features | Smart Sensing |
| Age Range Description | Adult |
| Band Material Type | Titanium |
| Battery Average Life | 5 days |
| Battery Capacity | 22 milliamp_hours |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Best Sellers Rank | #238 in Electronics ( See Top 100 in Electronics ) #2 in Smart Rings #6 in Activity & Fitness Trackers |
| Brand | OURA |
| Built-In Media | Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide |
| Cellular Technology | Not Supported |
| Closure Type | Buckle |
| Color | Stealth |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone |
| Compatible Phone Models | Compatible with iOS and Android devices |
| Connectivity Technology | Bluetooth |
| Controller Type | App-based |
| Customer Reviews | 4.0 4.0 out of 5 stars (8,953) |
| Display Type | No Display |
| GPS Geotagging Functionality | GPS Via Smartphone |
| Human Interface Input | Unknown |
| Item Dimensions | 0.98 x 0.98 x 0.31 inches |
| Item Weight | 0.19 kg |
| Manufacturer | Oura |
| Metrics Measured | Body Temperature, Menstrual Cycle, Sleep Duration, Stress |
| Model Name | Oura Ring 4 - Stealth - Size 11 |
| Model Number | JZ90-54218-11 |
| Operating System | i_os, android |
| Shape | Round |
| Style Name | Metallic |
| Supported Application | Fitness Tracker, Sleep Monitor, Heart Rate Monitor, Pedometer, Multisport Tracker, Reminders, Calendar, Music Player, Messages, Social Media, Weather, Contacts, Photo Gallery, Find My Phone, Voice Assistant, Voice Control, Voice Record, Time Display, Phone, Video Record, Camera, Alarm, Blood Pressure Monitor, Elevation Tracker, Email, GPS |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adults |
| Unit Count | 1 Count |
| Warranty Description | 1 Year Manufacturer |
| Warranty Type | Standard |
| Water Resistance Depth | 100 meters |
| Water Resistance Level | Waterproof |
| Waterproof Rating | IP68 |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |
| Wireless Provider | Unlocked |

## Product Details

- **Battery Capacity:** 22 milliamp_hours
- **Battery Cell Composition:** Lithium Polymer
- **Brand:** OURA
- **Connectivity Technology:** Bluetooth
- **GPS:** GPS Via Smartphone
- **Model Name:** Oura Ring 4 - Stealth - Size 11
- **Operating System:** i_os, android
- **Shape:** Round
- **Special Feature:** Smart Sensing
- **Wireless Communication Standard:** Bluetooth

## Images

![OURA Ring 4 Smart Ring - Stealth - Size 11 - Image 1](https://m.media-amazon.com/images/I/51-7ivDG+6L.jpg)
![OURA Ring 4 Smart Ring - Stealth - Size 11 - Image 2](https://m.media-amazon.com/images/I/51IDrh-0YEL.jpg)
![OURA Ring 4 Smart Ring - Stealth - Size 11 - Image 3](https://m.media-amazon.com/images/I/61PpbYwSK1L.jpg)
![OURA Ring 4 Smart Ring - Stealth - Size 11 - Image 4](https://m.media-amazon.com/images/I/71H17unV-KL.jpg)
![OURA Ring 4 Smart Ring - Stealth - Size 11 - Image 5](https://m.media-amazon.com/images/I/61zUDFM6dbL.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.

## Frequently Bought Together

- Oura Ring 4 - Stealth - Size 11 - 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 11 - Charging Dock and USB-C Cable - Charges Oura Ring 4 up to 8 Days

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**Shop now:** [https://www.desertcart.jp/products/661244395-oura-ring-4-smart-ring-stealth-size-11](https://www.desertcart.jp/products/661244395-oura-ring-4-smart-ring-stealth-size-11)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-15*