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Oura - Ring 4 - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 10 - Black - (2024)

Price
$204.99
Taxes and shipping calculated at checkout
Condition: Excellent

Oura - Ring 4 - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 10 - Black - (2024)

Condition
Price
Excellent
$204.99
Good
$194.99
$204.99
Sold out
Eco-Save
$184.99
$204.99
Sold out
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12 Month Warranty

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Description

 

Oura Ring 4 - Smart Ring - Size 10 - Black

OVERVIEW

The Oura Ring 4 (2024) is a premium, high-performance smart ring engineered to seamlessly monitor health metrics, sleep architecture, and daily recovery indicators in a sleek wearable format. Constructed with a structurally resilient titanium design in Black, this Size 10 ring is optimized for active individuals, corporate professionals, and wellness enthusiasts seeking non-intrusive biometric telemetry. Driven by Oura's advanced Smart Sensing technology, it delivers exceptional signal accuracy and continuous micro-processing efficiency across diverse daily activities. Featuring round-the-clock biometric tracking and up to 100m water resistance, this refurbished hardware configuration offers elite lifecycle longevity and outstanding fiscal value for modern health management.

KEY FEATURES

  • Smart Sensing Technology: Utilizes recessed research-grade optical sensors and adaptive algorithms to deliver high-fidelity health and biometric accuracy day and night.
  • Comprehensive Health & Sleep Metrics: Monitors deep sleep cycles, heart rate variability (HRV), resting heart rate, blood oxygen (SpO2) levels, and daytime stress telemetry.
  • Durable Lightweight Titanium Architecture: Precision-crafted in a sleek Black finish with an all-titanium inner and outer design for 24/7 wearability and 100m water resistance.
  • Extended Battery Lifecycle: Provides up to 8 days of battery life on a single charge with fast inductive charging and low-power Bluetooth data synchronization.

SPECIFICATIONS

Device Type Smart Ring / Smart Wearable Architecture
OS Version None (Syncs via Oura App for iOS & Android)
Processor / CPU Embedded Low-Power Telemetry Microcontroller
RAM Size + Type Embedded Low-Power Shared Memory
Storage Onboard Fixed Telemetry Flash Memory
Screen / Display N/A (Screenless Form Factor)
Touch Screen No
Color Black
Battery Integrated Rechargeable Lithium-Ion (Up to 8 Days Battery Lifecycle)
Hardware Upgradeability Rating Non-Upgradeability - Factory-sealed titanium structural architecture water-resistant to 100m.
Memory Upgradeability Non-Upgradeability - Memory layers permanently integrated within custom architecture.
Storage Upgradeability Non-Upgradeability - Fixed embedded telemetry flash modules.
Physical Ports & Expansion None (Utilizes inductive magnetic wireless docking configuration interface)

CONNECTIVITY

  • Bluetooth Wireless: Bluetooth Low Energy (BLE) framework enabling low-power biometric links with companion iOS and Android smartphones.
  • Application Synchronization: Automated cloud sync via the Oura companion app for continuous health monitoring and telemetry logging.

WHAT'S INCLUDED

  • Oura Ring 4 (Size 10 - Black) Device
  • Magnetic Inductive Wireless Charging Dock & Cable

DOES NOT INCLUDE

  • Original Box
  • AC Wall Power Charging Adapter

CONDITION

  • This device 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 10 - Black - (2024)
Model JZ90-54144-10
Color Black
Storage Capacity Internal Flash Memory (stores up to 6 days of offline health data)

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.