---
product_id: 663759646
title: "OURA Ring 4 Smart Ring - Brushed Silver - Size 12 | Sleep, Activity, Women’s Health, AI Advisor, Up to 8 Days of Battery Life, Size Before You Buy, Android & iOS Compatible"
brand: "oura"
price: "2807 zł"
currency: PLN
in_stock: true
category: "Oura"
url: https://www.desertcart.pl/products/663759646-oura-ring-4-smart-ring-brushed-silver-size-12-sleep
store_origin: PL
region: Poland
---

# Up to 8 days battery life Water resistant up to 100m Tracks 50+ health metrics OURA Ring 4 Smart Ring - Brushed Silver - Size 12 | Sleep, Activity, Women’s Health, AI Advisor, Up to 8 Days of Battery Life, Size Before You Buy, Android & iOS Compatible

**Brand:** oura
**Price:** 2807 zł
**Availability:** ✅ In Stock

## Summary

> 💍 Own your health journey with the ring that knows you best.

## Quick Answers

- **What is this?** OURA Ring 4 Smart Ring - Brushed Silver - Size 12 | Sleep, Activity, Women’s Health, AI Advisor, Up to 8 Days of Battery Life, Size Before You Buy, Android & iOS Compatible by oura
- **How much does it cost?** 2807 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/663759646-oura-ring-4-smart-ring-brushed-silver-size-12-sleep)

## 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

- • **Perfect Fit Guarantee:** Unique sizing kit ensures your Oura Ring fits like a glove before you buy—comfort meets accuracy.
- • **Adaptive Smart Sensing:** AI-powered insights that evolve with your body, delivering precision health data 24/7.
- • **Effortless All-Day Wear:** Sleek titanium design with no screen or vibrations—wear it, forget it, and stay connected.
- • **Seamless Multi-Ring Style:** Switch between finishes effortlessly via the app to match your mood or outfit.
- • **Comprehensive Health Tracking:** Monitor sleep, activity, stress, heart & women’s health metrics—all in one discreet ring.

## Overview

The Oura Ring 4 is a cutting-edge smart ring crafted from titanium, designed to track over 50 health metrics including sleep, activity, stress, and women’s health. With up to 8 days of battery life, water resistance up to 100 meters, and a unique sizing kit for a perfect fit, it offers continuous, adaptive health insights via Bluetooth on iOS and Android. Its minimalist design and multi-ring support make it a stylish, discreet companion for the health-conscious professional.

## 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 | B0D9WW91P1 |
| Additional Features | Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight |
| Age Range Description | Adult |
| Band Color | brushed silver |
| Band Material Type | Stainless Steel |
| Battery Average Life | 5 days |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Best Sellers Rank | #231 in Electronics ( See Top 100 in Electronics ) #2 in Smart Rings #7 in Activity & Fitness Trackers |
| Brand | OURA |
| Built-In Media | Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide |
| Case Material Type | Titanium |
| Closure Type | Tang Buckle |
| Color | Brushed Silver |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone |
| Compatible Phone Models | Compatible with iOS and Android devices |
| Connectivity Technology | Bluetooth |
| Customer Reviews | 4.0 4.0 out of 5 stars (8,845) |
| Display Type | No Display |
| GPS Geotagging Functionality | GPS Via Smartphone |
| Human Interface Input | Buttons |
| Item Dimensions | 1.02 x 1.02 x 0.31 inches |
| Item Dimensions D x W x H | 1.02"D x 1.02"W x 0.31"H |
| Manufacturer | Oura |
| Metrics Measured | Body Temperature, Menstrual Cycle, Sleep Duration, Stress |
| Model Name | Oura Ring 4 - Brushed Silver - Size 12 - Smart Ring | Size First with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life |
| Model Number | JZ90-54220-12 |
| Operating System | Android |
| Shape | Round |
| Style Name | Metallic |
| Supported Application | Fitness Tracker, Sleep Monitor, Heart Rate Monitor, Multisport Tracker, Calendar, Reminders, Weather, Messages, Phone, Camera, Music Player, Voice Assistant, Elevation Tracker, Pedometer, Blood Pressure Monitor, Alarm, Voice Control, GPS, Email, Social Media, Find My Phone, Video Record, Voice Record, Time Display, Heart Rate Monitor, Blood Pressure Monitor, Pedometer, Multisport Tracker, Camera, … |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adults |
| Unit Count | 1 Count |
| Warranty Description | 1 Year Manufacturer |
| Warranty Type | Limited |
| Water Resistance Depth | 100 meters |
| Water Resistance Level | Water Resistant |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |
| Wireless Provider | Unlocked |

## Product Details

- **Battery Cell Composition:** Lithium Polymer
- **Brand:** OURA
- **Connectivity Technology:** Bluetooth
- **GPS:** GPS Via Smartphone
- **Operating System:** Android
- **Shape:** Round
- **Special Feature:** Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight
- **Style:** Metallic
- **Wireless Communication Standard:** Bluetooth

## Images

![OURA Ring 4 Smart Ring - Brushed Silver - Size 12 | Sleep, Activity, Women’s Health, AI Advisor, Up to 8 Days of Battery Life, Size Before You Buy, Android & iOS Compatible - Image 1](https://m.media-amazon.com/images/I/51yQA1CgzLL.jpg)
![OURA Ring 4 Smart Ring - Brushed Silver - Size 12 | Sleep, Activity, Women’s Health, AI Advisor, Up to 8 Days of Battery Life, Size Before You Buy, Android & iOS Compatible - Image 2](https://m.media-amazon.com/images/I/51HTQ30KGVL.jpg)
![OURA Ring 4 Smart Ring - Brushed Silver - Size 12 | Sleep, Activity, Women’s Health, AI Advisor, Up to 8 Days of Battery Life, Size Before You Buy, Android & iOS Compatible - Image 3](https://m.media-amazon.com/images/I/61XcjmDzf2L.jpg)
![OURA Ring 4 Smart Ring - Brushed Silver - Size 12 | Sleep, Activity, Women’s Health, AI Advisor, Up to 8 Days of Battery Life, Size Before You Buy, Android & iOS Compatible - Image 4](https://m.media-amazon.com/images/I/71CZzCznHaL.jpg)
![OURA Ring 4 Smart Ring - Brushed Silver - Size 12 | Sleep, Activity, Women’s Health, AI Advisor, Up to 8 Days of Battery Life, Size Before You Buy, Android & iOS Compatible - 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 - Brushed Silver - Size 12 - 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 12 - Charging Dock and USB-C Cable - Charges Oura Ring 4 up to 8 Days

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-08-10*