---
product_id: 734025370
title: "Oura Ring 4 - Brushed Silver - Size 12 - 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: "19431 Ft"
currency: HUF
in_stock: false
reviews_count: 5
url: https://www.desertcart.hu/products/734025370-oura-ring-4-brushed-silver-size-12-smart-ring-unique
store_origin: HU
region: Hungary
---

# 8 days battery life continuous heart rate monitoring advanced sleep tracking Oura Ring 4 - Brushed Silver - Size 12 - 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:** 19431 Ft
**Availability:** ❌ Out of Stock

## Summary

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

## Quick Answers

- **What is this?** Oura Ring 4 - Brushed Silver - Size 12 - 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?** 19431 Ft with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/734025370-oura-ring-4-brushed-silver-size-12-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

- • **Sleep Like a Pro:** Cutting-edge sleep tracking technology delivers deep insights to optimize your nightly recovery and energy levels.
- • **Seamless Smart Sensing:** Bluetooth-enabled smart sensing integrates effortlessly with your smartphone for real-time data and actionable insights.
- • **All-Day Power, No Pause:** Up to 8 days of uninterrupted battery life keeps you connected and tracking without daily charging hassle.
- • **Heart Rate on Your Finger:** Continuous heart rate monitoring right on your finger for precise fitness and health data anytime, anywhere.
- • **Tailored Fit, Zero Guesswork:** Unique Size First system with Oura’s sizing kit ensures a perfect, comfortable fit—because one size never fits all.

## Overview

The Oura Ring 4 in brushed silver 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 sizing system, it offers a seamless blend of style and cutting-edge biometric technology to optimize your daily performance and recovery.

## Description

Oura Ring 4 - Brushed Silver - Size 12 - 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 : desertcart.in: Jewellery

Review: 事前にサイズキットを購入して１，２日候補となる指でつけて生活することはマストです。 Ouraリングそのものはデータが好きな人間にとって最高のツールです。 結構厚みもありますが、日常生活で邪魔に感じることはほとんどなく日常の一部になっています。
Review: Najlepszy tracker samopoczucia i dobrostanu

## Features

- Smart Sensing

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | OURA |
| Manufacturer | Oura |
| Model | JZ90-54220-12 |
| 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 |
| Product Dimensions | 2.6 x 2.6 x 0.8 cm; 191 g |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Item model number | JZ90-54220-12 |
| 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 | Analog |
| 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 | 191 g |

## Product Details

- **Special Feature:** Smart Sensing
- **Connectivity Technology:** Bluetooth
- **Wireless Communication Standard:** Bluetooth
- **Battery Cell Composition:** Lithium Polymer
- **GPS:** No GPS

## Images

![Oura Ring 4 - Brushed Silver - Size 12 - 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/416UVBKEzTL._SS40_.jpg)
![Oura Ring 4 - Brushed Silver - Size 12 - 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/41A8fVsGkML._SS40_.jpg)
![Oura Ring 4 - Brushed Silver - Size 12 - 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/41AvnSPbgfL._SS40_.jpg)
![Oura Ring 4 - Brushed Silver - Size 12 - 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/41KXVI2rhAL._SS40_.jpg)
![Oura Ring 4 - Brushed Silver - Size 12 - 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/41kcfnzZZQL._SS40_.jpg)

## 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

### ⭐⭐⭐⭐⭐ Review
*by L***S on 9 December 2025*

事前にサイズキットを購入して１，２日候補となる指でつけて生活することはマストです。 Ouraリングそのものはデータが好きな人間にとって最高のツールです。 結構厚みもありますが、日常生活で邪魔に感じることはほとんどなく日常の一部になっています。

### ⭐⭐⭐⭐⭐ Review
*by U***A on 31 July 2025*

Najlepszy tracker samopoczucia i dobrostanu

### ⭐⭐⭐⭐⭐ Review
*by T***A on 15 December 2025*

Increíble gran compra …

## 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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**Shop now:** [https://www.desertcart.hu/products/734025370-oura-ring-4-brushed-silver-size-12-smart-ring-unique](https://www.desertcart.hu/products/734025370-oura-ring-4-brushed-silver-size-12-smart-ring-unique)

---

*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-03-10*