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Oura Ring 4 Smart Ring Size Before You Buy with OR4 Sizing Kit Size 5 Stealth (2024)

Price
$329.99
Taxes and shipping calculated at checkout
Condition: Excellent

Oura Ring 4 Smart Ring Size Before You Buy with OR4 Sizing Kit Size 5 Stealth (2024)

Condition
Price
Excellent
$329.99
Good
$309.99
$329.99
Sold out
Eco-Save
$289.99
$329.99
Sold out
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12 Month Warranty

on most devices

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Description

 

Oura Ring 4 Smart Ring - Size 5 - Stealth Titanium Finish (2024)

OVERVIEW

The Oura Ring 4 Smart Ring (Size 5, Stealth) is a state-of-the-art wearable telemetry solution engineered to deliver medical-grade health insights in a seamless, discreet titanium design. Equipped with Smart Sensing technology and advanced optical biometric sensors, this device continuously tracks sleep quality, readiness, heart rate variability (HRV), and activity metrics without distracting screens or notifications. Designed for corporate professionals, athletes, and wellness enthusiasts seeking long lifecycle performance, the Ring 4 offers effortless background data synchronization via low-energy Bluetooth. Restored to Grade A condition, this hardware configuration provides elite personal analytics, superior durability, and exceptional value for modern health-conscious users.

KEY FEATURES

  • Smart Sensing Technology: Next-generation recessed biometric sensors dynamically adjust to your finger for continuous, highly accurate heart rate and sleep telemetry tracking.
  • Sleek Titanium Architecture: Crafted from lightweight, durable titanium with a scratch-resistant Stealth finish designed for 24/7 wear and 100-meter water resistance.
  • Extended Battery Lifecycle: Delivers up to 8 days of uninterrupted operation on a single charge, ensuring seamless long-term monitoring without constant downtime.
  • Screenless Wellness Design: Minimalist non-intrusive form factor operates silently in the background, syncing data seamlessly to companion iOS and Android devices.

SPECIFICATIONS

Device Type Smart Ring / Health & Fitness Wearable Architecture
OS Version Proprietary Embedded Firmware (Syncs with iOS & Android)
Processor / CPU Ultra-Low-Power Custom Biometric Microcontroller
RAM Size + Type Embedded Microcontroller Cache Memory
Storage Integrated Onboard Flash Memory (Up to 7 Days Offline Telemetry)
Screen / Display None (Discreet Screenless Form Factor)
Touch Screen No
Color Stealth (Matte Titanium Finish)
Battery Integrated Rechargeable Lithium-Polymer (Up to 8 Days Battery Lifecycle)
Hardware Upgradeability Rating Non-Upgradeability - Factory-sealed lightweight chassis engineered for 100m water resistance.
Memory Upgradeability Non-Upgradeability - Memory architecture is permanently integrated within the core system board.
Storage Upgradeability Non-Upgradeability - Onboard flash storage modules are fixed and embedded.
Physical Ports & Expansion None (Utilizes magnetic inductive wireless charging dock interface)

CONNECTIVITY

  • Bluetooth Wireless: Bluetooth Low Energy (BLE) framework enabling low-power telemetry links and reliable cloud synchronization with mobile companion apps.

WHAT'S INCLUDED

  • Oura Ring 4 (Size 5, Stealth)
  • OR4 Sizing Kit
  • Inductive Wireless Charging Dock & USB Cable

DOES NOT INCLUDE

  • Original Box
  • AC Wall Power Charging Adapter

CONDITION

  • This item has been professionally tested by trained technicians and is fully functional. The device has been professionally refurbished to an excellent condition with minimal signs of wear and a pristine finish. This is a refurbished product. It has been inspected, tested, and restored to full working condition. Minor cosmetic imperfections or light signs of wear may be present. Devices will have some variation in appearance.
See Specifications
Brand R3NEW
Title Oura Ring 4 Smart Ring Size Before You Buy with OR4 Sizing Kit Size 5 Stealth (2024)
Model Oura Ring 4
Color Black

FAQ

What kind of warranty/guarantee do you offer?

At R3NEW, most transactions are backed by a 1-year warranty, covering technical defects and malfunctions, while every purchase includes a 30-day guarantee. Our warranty is designed to give you peace of mind, ensuring the reliability and longevity of your device.

What's the difference between the conditions? (Excellent, Good, EcoSave)

Great question! Let us break down the difference.

Excellent: Our Excellent condition devices offer a pristine user experience that rivals new units, boasting a flawless appearance with no visible scratches on the display or body. Each device undergoes rigorous testing to ensure it operates like new, giving you peace of mind with a full year of warranty coverage. It’s an ideal choice for those seeking near-new quality without the brand-new price tag

Good: Devices in Good condition are a great compromise between cost and quality. You might find a few minor scratches or slight nicks on the body or display, but these are purely cosmetic and don’t affect the device’s operation. We suggest using a case to bring its external appearance closer to 'like new.' Rest assured, every device meets our strict functional standards and comes with a one-year warranty for functionality

EcoSave: Opt for our EcoSave condition if you want to maximize value while minimizing environmental impact. These devices show visible signs of use, such as scratches or dents, which are purely cosmetic and can often be concealed with a case. Each device has passed our comprehensive functional tests and is backed by a one-year warranty, ensuring it works perfectly for you while also being kind to the planet.

Can I trust R3NEW?

We've sold electronics for over 15 years and are one of top trusted sources of certified refurbished electronics. Plus, with a 30-day guarantee and 12 month warranty, you can shop with peace of mind. If you have any issues at all, just email our support team and we'll help you out.