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Oura Ring 4 Ceramic Smart Ring Size Before You Buy with OR4 Sizing Kit Size 13 Cloud (2025)

Price
$369.99
Taxes and shipping calculated at checkout
Condition: Good

Oura Ring 4 Ceramic Smart Ring Size Before You Buy with OR4 Sizing Kit Size 13 Cloud (2025)

Condition
Price
Excellent
$389.99
Sold out
Good
$369.99
Eco-Save
$329.99
$369.99
Sold out
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Description

 

Oura Ring 4 Ceramic Smart Ring - Size 13 Cloud

OVERVIEW

The Oura Ring 4 Ceramic Smart Ring (Size 13, Cloud) is an advanced wearable activity tracker engineered to deliver comprehensive biometric telemetry and health logging in a sleek, screenless format. Encased in a structurally resilient Cloud ceramic housing, this device is optimized for corporate professionals and health-conscious individuals who require seamless, non-intrusive monitoring. Driven by low-power embedded sensing architecture, it captures precise heart rate, sleep metrics, and daily activity levels with exceptional multi-day battery efficiency. This refurbished Grade B hardware configuration offers elite structural longevity and outstanding fiscal value for modern digital wellness lifestyles.

KEY FEATURES

  • Advanced Biometric Sensing: Continuously tracks heart rate, blood oxygen, body temperature variations, and detailed sleep stages with high sensor accuracy.
  • Premium Ceramic Housing: Built with a highly durable, scratch-resistant Cloud ceramic finish engineered for lightweight, all-day comfort.
  • Ultra-Efficient Battery Performance: Delivers multi-day continuous telemetry tracking on a single charge with low-power sensor architecture.
  • Seamless Mobile Integration: Wireless Bluetooth pairing syncs health metrics instantaneously with companion mobile applications for comprehensive data analysis.

SPECIFICATIONS

Device Type Smart Ring / Activity Tracker
OS Version Proprietary Embedded Firmware (iOS/Android Compatible)
Processor / CPU Low-Power Embedded Microcontroller
RAM Size + Type Integrated Embedded Memory
Storage Internal Flash Memory (Multi-day offline telemetry cache)
Screen / Display None (Screenless Ergonomic Design)
Touch Screen No
Color Cloud (Ceramic)
Battery Integrated Rechargeable Battery (Up to 7 Days Battery Lifecycle)
Hardware Upgradeability Rating Non-Upgradeability - Factory-sealed waterproof ceramic housing
Memory Upgradeability Non-Upgradeability - Fixed embedded chipset architecture
Storage Upgradeability Non-Upgradeability - Fixed internal memory modules
Physical Ports & Expansion None (Utilizes inductive magnetic charging dock)

CONNECTIVITY

  • Bluetooth Low Energy (BLE): Low-power wireless protocol for continuous data synchronization with compatible iOS and Android devices.

WHAT'S INCLUDED

  • Oura Ring 4 Ceramic Smart Ring (Size 13, Cloud)
  • Charging Dock with USB Charging Cable

DOES NOT INCLUDE

  • Original Box
  • Sizing Kit

CONDITION

  • This Grade B refurbished product has been thoroughly inspected, tested, and restored to full operational condition by trained technicians. Minor cosmetic imperfections or light signs of previous use (such as slight surface marks) may be present. This device is fully functional with 100% hardware integrity.
See Specifications
Brand R3NEW
Title Oura Ring 4 Ceramic Smart Ring Size Before You Buy with OR4 Sizing Kit Size 13 Cloud (2025)
Model JZ90-57460-13
Color Cloud
Storage Capacity Internal Flash (Stores up to 6 days of data offline)

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.