---
product_id: 723998697
title: "Oura Ring 4 - Rose Gold - Size 8 - Smart Ring - Unique Sizing, Not Standard US Ring Sizes - Size First - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life"
brand: "oura"
price: "HK$26"
currency: HKD
in_stock: false
url: https://www.desertcart.hk/products/723998697-oura-ring-4-rose-gold-size-8-smart-ring-unique
store_origin: HK
region: Hong Kong
---

# Advanced sleep tracking 8 days battery life Continuous heart rate monitoring Oura Ring 4 - Rose Gold - Size 8 - Smart Ring - Unique Sizing, Not Standard US Ring Sizes - Size First - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life

**Brand:** oura
**Price:** HK$26
**Availability:** ❌ Out of Stock

## Summary

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

## Quick Answers

- **What is this?** Oura Ring 4 - Rose Gold - Size 8 - Smart Ring - Unique Sizing, Not Standard US Ring Sizes - Size First - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life by oura
- **How much does it cost?** HK$26 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/723998697-oura-ring-4-rose-gold-size-8-smart-ring-unique)

## 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

- • **Heart Rate Mastery:** Monitor your heart rate 24/7 with clinical-grade accuracy for smarter wellness decisions.
- • **Seamless Smart Sensing:** Bluetooth-enabled with proprietary Oura OS for smooth syncing and intuitive health tracking.
- • **Custom Fit, No Guesswork:** Size First technology ensures a perfect fit every time—comfort meets style effortlessly.
- • **Precision Sleep Insights:** Unlock your best rest with cutting-edge sleep tracking that adapts to your lifestyle.
- • **Unmatched Battery Endurance:** Stay powered for up to 8 days on a single charge—less downtime, more data.

## Overview

The Oura Ring 4 in Rose Gold is a sleek, smart wearable designed for professionals who demand precision health insights. Featuring up to 8 days of battery life, advanced sleep and heart rate tracking, and a unique Size First fitting system, it combines luxury jewelry aesthetics with cutting-edge biometric technology. Compatible with smartphones via Bluetooth and powered by Oura’s proprietary OS, it offers seamless, continuous wellness monitoring without the bulk of traditional wearables.

## Description

Full description not available

## Features

- Smart Sensing

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | OURA |
| Manufacturer | Oura |
| Model | JZ90-54219-08 |
| Model Name | Oura Ring 4 - Rose Gold - Size 8 - Smart Ring | Size First with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life |
| Product Dimensions | 2.6 x 2.6 x 0.8 cm; 181 g |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Item model number | JZ90-54219-08 |
| Operating System | Proprietary (Oura OS) |
| Compatible Devices | Smartphone |
| Special Features | Smart Sensing |
| Mounting Hardware | Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide |
| Number of items | 1 |
| Display Type | No Display |
| Battery Average Life | 8 Days |
| Charging Time | 80 Minutes |
| 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 | 181 g |

## Product Details

- **Operating System:** Proprietary (Oura OS)
- **Special Feature:** Smart Sensing
- **Connectivity Technology:** Bluetooth
- **Wireless Communication Standard:** Bluetooth
- **Battery Cell Composition:** Lithium Polymer

## Images

![Oura Ring 4 - Rose Gold - Size 8 - Smart Ring - Unique Sizing, Not Standard US Ring Sizes - Size First - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life - Image 1](https://m.media-amazon.com/images/I/51zKmnnZU8L.jpg)
![Oura Ring 4 - Rose Gold - Size 8 - Smart Ring - Unique Sizing, Not Standard US Ring Sizes - Size First - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life - Image 2](https://m.media-amazon.com/images/I/517yboOWkZL.jpg)
![Oura Ring 4 - Rose Gold - Size 8 - Smart Ring - Unique Sizing, Not Standard US Ring Sizes - Size First - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life - Image 3](https://m.media-amazon.com/images/I/719fGrAYcDL.jpg)
![Oura Ring 4 - Rose Gold - Size 8 - Smart Ring - Unique Sizing, Not Standard US Ring Sizes - Size First - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life - Image 4](https://m.media-amazon.com/images/I/713l574H8CL.jpg)
![Oura Ring 4 - Rose Gold - Size 8 - Smart Ring - Unique Sizing, Not Standard US Ring Sizes - Size First - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life - Image 5](https://m.media-amazon.com/images/I/713c+aoc0aL.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 8 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life
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**Shop now:** [https://www.desertcart.hk/products/723998697-oura-ring-4-rose-gold-size-8-smart-ring-unique](https://www.desertcart.hk/products/723998697-oura-ring-4-rose-gold-size-8-smart-ring-unique)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-28*