Click to open expanded view

Oura Ring4 mart Ring - Size 11 - Silver - JZ90-54220-11

Price
$209.99
Taxes and shipping calculated at checkout
Condition: Eco-Save

Oura Ring4 mart Ring - Size 11 - Silver - JZ90-54220-11

Condition
Price
Excellent
$229.99
Sold out
Good
$219.99
Sold out
Eco-Save
$209.99
Compare product options
Only 2 left in stock!
American Express
Apple Pay
Diners Club
Discover
Google Pay
Mastercard
PayPal
Shop Pay
Visa

12 Month Warranty

on most devices

30-Day Money Back Guarantee

on every device

Fast Shipping

most orders ship same day

Description

 

Oura Ring 4 - Smart Ring - Size 11 - Brushed Silver

OVERVIEW

The Oura Ring 4 (Size 11, Brushed Silver) is a premium, high-performance smart ring engineered to seamlessly integrate comprehensive biometric telemetry, sleep architecture logging, and daily activity tracking into an ultra-lightweight wearable format. Encased in a structurally resilient titanium housing with a sleek brushed silver finish, this device is optimized for wellness enthusiasts, corporate professionals, and health-conscious individuals moving through fast-paced environments. Driven by advanced multi-wavelength optical sensors, it delivers exceptional micro-processing efficiency and continuous health telemetry with medical-grade sensing accuracy. Featuring an extended battery lifecycle and water resistance, this refurbished hardware configuration offers elite structural longevity and outstanding fiscal value for modern digital lifestyles.

KEY FEATURES

  • Advanced Biometric Telemetry: Continuously monitors heart rate, blood oxygen saturation (SpO2), and skin temperature variations with high-fidelity sensory accuracy.
  • Sleep Architecture Logging: Automatically records deep, REM, and light sleep cycles alongside nighttime heart rate variability (HRV) to optimize recovery metrics.
  • Sleek Titanium Architecture: Crafted from lightweight, durable titanium with a brushed silver finish designed to withstand rigorous daily wear and water submersion.
  • Extended Battery Lifecycle: Experience up to 7-8 days of uninterrupted health tracking on a single inductive charging cycle for continuous operational readiness.

SPECIFICATIONS

Device Type Premium Smart Ring / Advanced Biometric Wearable
OS Version None (Companion App Compatible)
Processor / CPU Custom Ultra-Low Power Biometric Telemetry DSP
RAM Size + Type None
Storage Onboard Flash Memory (Stores up to several days of telemetry data)
Screen / Display None
Touch Screen No
Color Brushed Silver (Size 11)
Battery Integrated Rechargeable Lithium-Polymer (Up to 7-8 Days All-Day Battery Lifecycle)
Hardware Upgradeability Rating Non-Upgradeable - Factory-sealed structural ecosystem designed for water resistance; non-modular architecture
Memory Upgradeability Non-Upgradeability - Fixed microcode layer permanently integrated within the custom logic board layout
Storage Upgradeability Non-Upgradeability - Onboard micro-flash storage modules are fixed and embedded
Physical Ports & Expansion None (Utilizes dedicated inductive wireless charging dock configuration interface)

CONNECTIVITY

  • Bluetooth Wireless: Low-energy Bluetooth (BLE) framework enabling low-power telemetry synchronization with companion smartphones.

WHAT'S INCLUDED

  • Oura Ring 4 Device (Size 11)
  • Inductive Wireless Charging Dock / Cable

DOES NOT INCLUDE

  • Original Box
  • AC Wall Power Charging Adapter

© Copyright. All rights reserved.

See Specifications
Brand R3NEW
Title Oura Ring4 mart Ring - Size 11 - Silver - JZ90-54220-11
Model Oura Ring 4 (Size 11) / JZ90-54220-11
Color Brushed Silver

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.