---
product_id: 722393161
title: "Oura Ring 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: "3008 zł"
currency: PLN
in_stock: true
category: "Oura"
url: https://www.desertcart.pl/products/722393161-oura-ring-4-smart-ring-size-first-with-oura-ring
store_origin: PL
region: Poland
---

# 8 days battery life 30+ biometric sleep & health metrics Water resistant titanium design Oura Ring 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:** 3008 zł
**Availability:** ✅ In Stock

## Summary

> 💍 Own your health, style, and sleep — all in one sleek ring.

## Quick Answers

- **What is this?** Oura Ring 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?** 3008 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/722393161-oura-ring-4-smart-ring-size-first-with-oura-ring)

## 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 you stay focused on life, not charging — from workouts to nights out.
- • **Durable Elegance:** Crafted from all-titanium, the Oura Ring 4 is water resistant and designed for all-day comfort, even on sensitive skin.
- • **Data-Driven Wellness:** Track 30+ biometrics including sleep, heart rate, stress, and women’s health with Smart Sensing tech that adapts to you 24/7.
- • **Exclusive Insights, Anytime:** Enjoy your first month of Oura Membership free, unlocking personalized health insights and trends via the Oura App.
- • **Precision Fit, Zero Guesswork:** Size yourself perfectly with the Oura Ring 4 Sizing Kit before you buy — no surprises, just confidence.

## Overview

The Oura Ring 4 is a cutting-edge smart ring designed for professionals who demand precision and style. Featuring over 30 biometric sensors, it delivers continuous, adaptive health tracking including sleep, heart rate, and stress metrics. Its durable titanium build is water resistant and comfortable for 24/7 wear, while an impressive 8-day battery life keeps you unplugged longer. The sizing kit ensures a perfect fit, and the Oura Membership offers personalized insights to optimize your wellness journey.

## Description

Oura Ring 4 - Black - Size 8 - Smart Wearable | Size First with Oura 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life : desertcart.ae: Electronics

## 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 |
|---------------|-------|
| ASIN | B0D9WVR866 |
| Additional Features | Advanced Health Tracking, Long Battery Life, Water Resistant, App Integration |
| Age Range Description | Adult |
| Band Color | black |
| Band Material Type | Titanium |
| Battery Average Life | 8 days |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Best Sellers Rank | #138 in Electronics ( See Top 100 in Electronics ) #1 in Wearable Tech Rings |
| Brand | OURA |
| Built-In Media | Information Booklet, Oura Ring 4, Oura Ring 4 Charger, Quick Start Guide, USB-C Cable |
| Case Material Type | Titanium |
| Closure Type | ring |
| Color | Black |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone, Tablet |
| Compatible Phone Models | Smartphone |
| Connectivity Technology | Bluetooth, Wi-Fi, Proprietary Wireless Protocol |
| Controller Type | Ring |
| Country of Origin | Estonia |
| Customer Reviews | 4.1 4.1 out of 5 stars (7,245) |
| Display Type | No Display |
| GPS Geotagging Functionality | No GPS |
| Global Trade Identification Number | 06430060153165 |
| Human Interface Input | Unknown |
| Item Dimensions | 25 x 25 x 7 millimeters |
| Item Dimensions D x W x H | 25D x 25W x 7H millimeters |
| Item Weight | 0.18 Kilograms |
| Manufacturer | Oura |
| Metrics Measured | [MULTI] |
| Model Name | Oura Ring 4 |
| Model Number | JZ90-54144-08 |
| Operating System | Proprietary Operating System |
| Shape | Round |
| Style Name | Modern |
| Supported Application | Fitness Tracker |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adults |
| Warranty Description | 2 year manufacturer warranty |
| Warranty Type | Lifetime |
| Water Resistance Depth | 100 Meters |
| Water Resistance Level | Water Resistant |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |

## Product Details

- **Battery cell composition:** Lithium Polymer
- **Connectivity technology:** Bluetooth, Wi-Fi, Proprietary Wireless Protocol
- **Operating system:** Proprietary Operating System
- **Special features:** Advanced Health Tracking, Long Battery Life, Water Resistant, App Integration
- **Wireless communication standard:** Bluetooth

## Images

![Oura Ring 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/51nCNxSwfYL.jpg)
![Oura Ring 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/51l2HN703bL.jpg)
![Oura Ring 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/51QDuTKnNyL.jpg)
![Oura Ring 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/616TtSRJf2L.jpg)
![Oura Ring 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/71NT8fo7vNL.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 - Black - 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
- 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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**Shop now:** [https://www.desertcart.pl/products/722393161-oura-ring-4-smart-ring-size-first-with-oura-ring](https://www.desertcart.pl/products/722393161-oura-ring-4-smart-ring-size-first-with-oura-ring)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-05-21*