---
product_id: 718335336
title: "OURARing 4 | Smart Ring | Size First with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life"
brand: "oura"
price: "S$923"
currency: SGD
in_stock: true
reviews_count: 3
url: https://www.desertcart.sg/products/718335336-ouraring-4-smart-ring-size-first-with-oura-ring-4
store_origin: SG
region: Singapore
---

# 30+ biometric sleep & health metrics Water resistant titanium design 8 days battery life OURARing 4 | Smart Ring | Size First with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life

**Brand:** oura
**Price:** S$923
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** OURARing 4 | Smart Ring | Size First with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life by oura
- **How much does it cost?** S$923 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/718335336-ouraring-4-smart-ring-size-first-with-oura-ring-4)

## 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:** Enjoy up to 8 days of battery life with no screens or vibrations—focus on living, not charging.
- • **Join the Wellness Elite:** Get your first month of Oura Membership free and unlock personalized insights that keep you ahead of the health curve.
- • **Sleek, Durable, All-Day Wear:** Crafted from lightweight titanium, water resistant and designed for 24/7 comfort—even for sensitive skin.
- • **Precision Sizing, Perfect Fit:** Size yourself with the exclusive Oura Ring 4 Sizing Kit to ensure flawless comfort and accuracy.
- • **Smart Sensing for Smarter You:** Track 30+ biometrics including heart rate, sleep, stress, and women’s health with adaptive, continuous monitoring.

## Overview

The Oura Ring 4 is a cutting-edge smart ring designed for professionals who demand precision and style. It tracks over 30 health metrics including sleep, heart rate, and stress with adaptive Smart Sensing technology. Featuring a durable, water-resistant titanium build and up to 8 days of battery life, it offers seamless 24/7 wearability without distractions. The exclusive sizing kit ensures a perfect fit, while the Oura Membership delivers personalized health insights, making it the ultimate wearable for proactive wellness management.

## Description

OURARing 4 | Smart Ring | Size First with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life

## Features

- SIZE BEFORE YOU BUY - Oura Ring 4 sizes are different from standard ring sizes. Size yourself with the Oura Ring 4 Sizing Kit and receive a dh35.00 desertcart credit towards the future purchase of an Oura Ring 4.
- OURA MEMBERSHIP - First month of membership is free with your purchase, $6.99/mo afterwards. Offer available to new members only. Or opt for the annual prepaid option for $79.99. Membership is tied to your account via the Oura App, not your physical ring.
- ACCURACY - SMART SENSING - Oura tracks over 30 biometrics, 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.
- 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.
- DESIGNED FOR 24/7 WEAR - The updated design of the Oura Ring 4 is more comfortable, fits better than ever, and is water resistant. The first all-titanium smart ring combines exceptional durability with a gentle touch, even for sensitive skin.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Age Range | Adult |
| Color | Black |
| Size | 4 |
| Style | Modern |
| Compatible with | Tablet, Smartphone |
| Display Type | No Display |
| Shape | ring |
| Meter | Sleep Duration, Heart Rate, Blood Oxygen (SpO2), Stress |
| Number of Items | 1 |
| Features | Heart Rate Monitor, Activity Tracker |
| Included Components | Oura Ring 4, Oura Ring 4 Charger, USB-C Cable, Information Booklet, Quick Start Guide |
| Batteries Included? | Yes |
| Brand | OURA |
| Manufacturer | Oura |
| Item model number | JZ90-54144-04 |
| Product Dimensions | 2.2 x 2.2 x 0.7 cm; 120 g |
| ASIN | B0D9WVJXZZ |

## Product Details

- **Special features:** Heart Rate Monitor, Activity Tracker
- **Connectivity technology:** Bluetooth
- **Wireless communication standard:** Bluetooth
- **Battery cell composition:** Lithium Polymer
- **GPS:** No GPS

## Images

![OURARing 4 | Smart Ring | Size First with Oura 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/51zKmnnZU8L.jpg)
![OURARing 4 | Smart Ring | Size First with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life - Image 2](https://m.media-amazon.com/images/I/612CtvmqfsL.jpg)
![OURARing 4 | Smart Ring | Size First with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life - Image 3](https://m.media-amazon.com/images/I/517yboOWkZL.jpg)
![OURARing 4 | Smart Ring | Size First with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life - Image 4](https://m.media-amazon.com/images/I/51qM68sQhcL.jpg)
![OURARing 4 | Smart Ring | Size First with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life - Image 5](https://m.media-amazon.com/images/I/61cG4dCXDqL.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

### ⭐⭐⭐⭐ Tracks almost correct - sleep tracking needs improvement though
*by A***R on 3 January 2025*

Tracks almost correct - sleep tracking needs improvement though - I wake up many times and it does not track that so well

### ⭐ Quality not great
*by D***V on 31 December 2024*

After one month charger/ring stopped working and connecting.

### ⭐ READ THIS BEFORE BUYING!!!
*by A***R on 29 April 2025*

I bought the ring at such a high price, assuming that it would improve my health, but this device doesn't work without a subscription; that's a pure scam. Without the subscription, there is nothing you can do on the app!!!! AVOID!!

## 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.sg/products/718335336-ouraring-4-smart-ring-size-first-with-oura-ring-4](https://www.desertcart.sg/products/718335336-ouraring-4-smart-ring-size-first-with-oura-ring-4)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-20*