---
product_id: 674083531
title: "Ring 4 Smart Ring - Silver - Size 15"
brand: "oura"
price: "$711.15"
currency: USD
in_stock: true
category: "Oura"
url: https://www.desertcart.us/products/674083531-ring-4-smart-ring-silver-size-15
store_origin: US
region: United States of America
---

# 8-day battery life Water resistant IP54 50+ health metrics tracked Ring 4 Smart Ring - Silver - Size 15

**Brand:** oura
**Price:** $711.15
**Availability:** ✅ In Stock

## Summary

> 💍 Own your health, effortlessly and in style.

## Quick Answers

- **What is this?** Ring 4 Smart Ring - Silver - Size 15 by oura
- **How much does it cost?** $711.15 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/674083531-ring-4-smart-ring-silver-size-15)

## 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 no constant charging—focus on living, not powering up.
- • **Custom Fit Confidence:** Unique sizing system ensures your perfect fit—because comfort is key to consistent tracking.
- • **Seamless Style Switch:** Multi-ring support lets you match your ring to your mood or outfit via the Oura App.
- • **Effortless All-Day Wear:** Sleek, lightweight titanium design with water resistance up to 100m keeps up with your lifestyle.
- • **Precision Health Insights:** Track 50+ vital metrics including sleep, heart, stress & women’s health with adaptive Smart Sensing.

## Overview

The Oura Ring 4 is a cutting-edge smart ring crafted from titanium, designed to deliver precise health insights by tracking over 50 biometric metrics including sleep, activity, stress, and women’s health. Featuring adaptive Smart Sensing technology, it offers continuous, personalized data with up to 8 days of battery life and water resistance rated at IP54. Its unique sizing system ensures a perfect fit, while multi-ring support allows easy style changes through the Oura App. Ideal for health-conscious professionals seeking discreet, reliable wellness tracking.

## 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 | B0D9WV7R98 |
| Additional Features | Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight |
| Age Range Description | Adult |
| Band Color | Black |
| Band Material Type | Stainless Steel |
| Battery Average Life | 5 days |
| Battery Capacity | 8 days |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Best Sellers Rank | #334 in Electronics ( See Top 100 in Electronics ) #3 in Smart Rings |
| Brand | OURA |
| Built-In Media | Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide |
| Case Material Type | Stainless Steel |
| Closure Type | Slip On |
| Color | Silver |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone |
| Compatible Phone Models | Android Devices, iOS Devices |
| Connectivity Technology | Bluetooth |
| Controller Type | Ring |
| Customer Reviews | 4.0 4.0 out of 5 stars (9,193) |
| Display Type | No Display |
| GPS Geotagging Functionality | GPS Via Smartphone |
| Human Interface Input | Unknown |
| Item Dimensions | 0.98 x 0.98 x 0.31 inches |
| Item Dimensions D x W x H | 0.98"D x 0.98"W x 0.31"H |
| Manufacturer | Oura |
| Metrics Measured | Body Temperature, Menstrual Cycle, Sleep Duration, Stress |
| Model Name | JZ90-54217-15 |
| Model Number | JZ90-54217-15 |
| Operating System | Proprietary/Custom |
| Shape | Round |
| Sim Card Size | eSIM |
| Style Name | Metallic |
| Supported Application | Fitness Tracker |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adults |
| Warranty Description | 1 Year Manufacturer |
| Warranty Type | Standard |
| Water Resistance Depth | 100 meters |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IP54 |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |

## Product Details

- **Battery Capacity:** 8 days
- **Battery Cell Composition:** Lithium Polymer
- **Brand:** OURA
- **Connectivity Technology:** Bluetooth
- **GPS:** GPS Via Smartphone
- **Model Name:** JZ90-54217-15
- **Operating System:** Proprietary/Custom
- **Shape:** Round
- **Special Feature:** Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight
- **Wireless Communication Standard:** Bluetooth

## Images

![Ring 4 Smart Ring - Silver - Size 15 - Image 1](https://m.media-amazon.com/images/I/51ul5++ZdWL.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 - 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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---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-09-19*