---
product_id: 722783629
title: "Ring 4 - Rose Gold - Size 6 - Smart Ring | Size First Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life"
brand: "oura"
price: "¥136002"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/722783629-ring-4-rose-gold-size-6-smart-ring-size-first
store_origin: JP
region: Japan
---

# Advanced Sleep & Activity Tracking Up to 8 Days Battery Life 24/7 Heart Rate Precision Ring 4 - Rose Gold - Size 6 - Smart Ring | Size First Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life

**Brand:** oura
**Price:** ¥136002
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Ring 4 - Rose Gold - Size 6 - Smart Ring | Size First Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life by oura
- **How much does it cost?** ¥136002 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/722783629-ring-4-rose-gold-size-6-smart-ring-size-first)

## 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

- • **Extended Battery Life:** Up to 8 days of uninterrupted wellness insights—no daily charging hassle.
- • **Sleek Rose Gold Design:** A subtle yet sophisticated smart ring that complements your professional style.
- • **Comprehensive Sleep Analysis:** Unlock deep sleep data to optimize your rest and recovery.
- • **Precision Heart Rate Monitoring:** Stay in tune with your body’s rhythm all day and night.
- • **Seamless Smartphone Integration:** Effortlessly sync your health stats via Bluetooth for real-time tracking.

## Overview

The Oura Ring 4 in Rose Gold is a cutting-edge smart ring designed for professionals seeking precise heart rate monitoring, advanced sleep and activity tracking, and up to 8 days of battery life. Its unique sizing ensures a perfect fit, while Bluetooth connectivity allows seamless syncing with your smartphone. Combining health tech with elegant design, it’s the ultimate wearable for optimizing your daily performance and recovery.

## Description

Full description not available

## Features

- Heart Rate Monitor, Activity Tracker

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | OURA |
| Manufacturer | Oura |
| Model | JZ90-54219-06 |
| Model Name | JZ90-54219-06 |
| Product Dimensions | 2.4 x 2.4 x 0.8 cm; 180 g |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Item model number | JZ90-54219-06 |
| Compatible Devices | Smartphone |
| Special Features | Heart Rate Monitor, Activity Tracker |
| Mounting Hardware | Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide |
| Number of items | 1 |
| Display Type | No Display |
| Batteries Included | Yes |
| Batteries Required | Yes |
| Battery cell composition | Lithium Polymer |
| Wireless Type | Bluetooth |
| Connector Type | Bluetooth |
| Device interface - primary | Buttons |
| Includes Rechargeable Battery | Yes |
| Manufacturer | Oura |
| Item Weight | 180 g |

## Product Details

- **Special Feature:** Heart Rate Monitor, Activity Tracker
- **Connectivity Technology:** Bluetooth
- **Wireless Communication Standard:** Bluetooth
- **Battery Cell Composition:** Lithium Polymer
- **GPS:** GPS Via Smartphone

## Images

![Ring 4 - Rose Gold - Size 6 - Smart Ring | Size First Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life - Image 1](https://m.media-amazon.com/images/I/61OizeerWIL.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.

## Frequently Bought Together

- Oura Ring 4 - Rose Gold - Size 6 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life
- PAVOI 14K Gold Plated Solid 925 Sterling Silver CZ Simulated Diamond Stackable Ring Eternity Bands for Women

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**Shop now:** [https://www.desertcart.jp/products/722783629-ring-4-rose-gold-size-6-smart-ring-size-first](https://www.desertcart.jp/products/722783629-ring-4-rose-gold-size-6-smart-ring-size-first)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-04-25*