---
product_id: 698763122
title: "Oura Ring 4 - Silver - Size 15 - Size Before You Buy"
brand: "oura"
price: "3681 zł"
currency: PLN
in_stock: true
reviews_count: 11
category: "Oura"
url: https://www.desertcart.pl/products/698763122-oura-ring-4-silver-size-15-size-before-you-buy
store_origin: PL
region: Poland
---

# Advanced health sensors Seamless app sync 7+ days battery life Oura Ring 4 - Silver - Size 15 - Size Before You Buy

**Brand:** oura
**Price:** 3681 zł
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Oura Ring 4 - Silver - Size 15 - Size Before You Buy by oura
- **How much does it cost?** 3681 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/698763122-oura-ring-4-silver-size-15-size-before-you-buy)

## 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

- • **Long-Lasting Power:** Enjoy over a week of use on a single wireless charge—stay connected without interruption.
- • **Smartphone Integration:** Dive deep into personalized analytics and trends via an intuitive app experience.
- • **Tailored Fit Guarantee:** Size Before You Buy kit ensures perfect fit for maximum comfort and data accuracy.
- • **Precision Health Insights:** Track heart rate, sleep stages, body temp & recovery with clinical-grade accuracy.
- • **Effortless All-Day Comfort:** Sleek, lightweight silver design fits like a second skin for continuous wear.

## Overview

The Oura Ring 4 in silver is a cutting-edge wearable ring designed for professional millennials seeking holistic health tracking. It offers advanced biometric sensors to monitor heart rate, sleep quality, body temperature, and activity levels with clinical precision. Featuring a sleek, lightweight design and over 7 days of battery life with wireless charging, it integrates seamlessly with a dedicated smartphone app for personalized health insights. The included sizing kit ensures a perfect fit, making it an essential smart accessory for those who value data-driven wellness and style.

## Description

Free delivery and returns on eligible orders. Buy Oura Ring 4 - Silver - Size 15 - Size Before You Buy at desertcart UK.

Review: A great alternative to a smart-watch - I was keen to utilise technology to help with my fitness, but love mechanical watches so a smart-watch wasn't an option. Came across this and after some research I gave it a punt. Very happy customer, the ring is a doddle to set up and works a treat. Battery life is a snadge less than advertised but not enough to make me dock points. It's a shame about the subscription, as I think the ring is costly enough that it's something of a liberty to charge for ongoing use, they could lose things like the guided meditation etc and give a free option, or bake in more value-add to the app. Enough moaning though, what it does it does really well, giving me insights into my sleep patterns and broader health. I am happy I bought it and check the app at least daily months after buying.
Review: Great item, very efficient at tracking - I love this ring, it does everything and more that you could ever want from a fitness tracker. It also works really well alongside your Apple Watch. I would highly recommend and it was sent to me within 24 hours.

## Features

- Compact and intelligent design for comfortable everyday wear
- Advanced health monitoring capabilities, including heart rate, sleep patterns, and activity tracking
- Long battery life with convenient wireless charging
- Seamless smartphone app integration for detailed health and activity analytics
- Available in multiple finishes and sizes for personalized style

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D9WV7R98 |
| Age Range Description | Adult |
| Band Colour | Silver |
| Band Material Type | Stainless Steel |
| Battery Average Life | 8 days |
| Battery Capacity | 336 |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Best Sellers Rank | 476 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 2 in Wearable Tech Rings |
| Box Contents | Information Booklet, Oura Ring 4, Oura Ring 4 Charger, Quick Start Guide, USB-C Cable |
| Brand Name | OURA |
| Case Material Type | Titanium |
| Closure Type | Slip On |
| Colour | Silver |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone, Tablet |
| Compatible Phone Models | all current smartphone models |
| Connectivity Technology | Bluetooth, USB |
| Controller Type | Ring |
| Country of Origin | Estonia |
| Customer Reviews | 4.2 4.2 out of 5 stars (7,042) |
| Display Type | No Display |
| GPS Geotagging Functionality | No GPS |
| Human Interface Input | Unknown |
| Item Dimensions | 25 x 25 x 8 millimetres |
| Item Dimensions D x W x H | 25D x 25W x 8H millimetres |
| Manufacturer | Oura |
| Metrics Measured | Heart Rate Monitor, Sleep Duration Monitor, Stress Monitor |
| Model Name | JZ90-54217-15 |
| Model Number | JZ90-54217-15 |
| Operating System | Proprietary/Custom |
| Product Features | Advanced Health Tracking |
| Shape | Round |
| Sim Card Size | eSIM |
| Style Name | Minimalist |
| Supported Application | Apple Health, Google Health Connect, Natural Cycles, Flo, Strava |
| Supported Satellite Navigation System | GPS |
| Target Audience | Men |
| Warranty Type | Lifetime |
| Water Resistance Depth | 50 Metres |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IP54 |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |

## Product Details

- **Battery capacity:** 336
- **Battery cell composition:** Lithium Polymer
- **Brand:** OURA
- **Connectivity technology:** Bluetooth, USB
- **GPS:** No GPS
- **Model name:** JZ90-54217-15
- **Operating system:** Proprietary/Custom
- **Shape:** Round
- **Special feature:** Advanced Health Tracking
- **Wireless communication standard:** Bluetooth

## Images

![Oura Ring 4 - Silver - Size 15 - Size Before You Buy - Image 1](https://m.media-amazon.com/images/I/5155uTN9BPL.jpg)
![Oura Ring 4 - Silver - Size 15 - Size Before You Buy - Image 2](https://m.media-amazon.com/images/I/51Hh6q3nxxL.jpg)
![Oura Ring 4 - Silver - Size 15 - Size Before You Buy - Image 3](https://m.media-amazon.com/images/I/71ioEwzfYZL.jpg)
![Oura Ring 4 - Silver - Size 15 - Size Before You Buy - Image 4](https://m.media-amazon.com/images/I/613EYvr-lAL.jpg)
![Oura Ring 4 - Silver - Size 15 - Size Before You Buy - Image 5](https://m.media-amazon.com/images/I/61dtM3Gy4UL.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

### ⭐⭐⭐⭐⭐ A great alternative to a smart-watch
*by S***Y on 16 June 2025*

I was keen to utilise technology to help with my fitness, but love mechanical watches so a smart-watch wasn't an option. Came across this and after some research I gave it a punt. Very happy customer, the ring is a doddle to set up and works a treat. Battery life is a snadge less than advertised but not enough to make me dock points. It's a shame about the subscription, as I think the ring is costly enough that it's something of a liberty to charge for ongoing use, they could lose things like the guided meditation etc and give a free option, or bake in more value-add to the app. Enough moaning though, what it does it does really well, giving me insights into my sleep patterns and broader health. I am happy I bought it and check the app at least daily months after buying.

### ⭐⭐⭐⭐⭐ Great item, very efficient at tracking
*by L***N on 8 April 2026*

I love this ring, it does everything and more that you could ever want from a fitness tracker. It also works really well alongside your Apple Watch. I would highly recommend and it was sent to me within 24 hours.

### ⭐⭐⭐⭐⭐ So So Happy!
*by M***D on 18 October 2025*

I hesitated for a while before investing in this gadget. And I love my Gadgets! but after doing some homework on the competition, I decided to jump for it. First, the fit and metal colour are great, I couldn't be happier, the quality and durability is insane, i do everything with it, I rarely take it off. The connectivity to my Samsung Z Fold6 was flawless, no hiccups, plus, everything you open the app, it updates in no time. so great compatibility. Now, you need to give it time to gather data about you, of course... it will not happen overnight which is quite right, but the intel you get afterwards is great. Your body age, sleep quality, energy available, your stress, it is such a great little ring. it is a lot of money for such a small device but the value for money is worth it. I highly recommend it if you are curious and want to be nudge in the right direction for better health.

## Frequently Bought Together

- Oura Ring 4 - Silver - Size 15 - 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 15 - Charging Dock and USB-C Cable - Charges Oura Ring 4 up to 8 Days

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**Shop now:** [https://www.desertcart.pl/products/698763122-oura-ring-4-silver-size-15-size-before-you-buy](https://www.desertcart.pl/products/698763122-oura-ring-4-silver-size-15-size-before-you-buy)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-05-26*