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Oura - Ring 4 - Smart Ring - Size 7 - Brushed Silver
Product Description
Product Description
Overview
Track your health, sleep, and daily activity with precision using the Oura Ring 4 in Brushed Silver (Size 7). Designed with a sleek, fully titanium exterior and a smooth inner molding, this next-generation smart ring delivers all-day biometric tracking without the clutter of a traditional smartwatch display. Powered by Smart Sensing technology, it continuously monitors heart rate, blood oxygen (SpO2), sleep quality, daytime stress, and readiness metrics. With water resistance up to 80 meters and multi-day battery life, it seamlessly integrates into your active lifestyle. Professionally refurbished to good condition, it offers advanced health insights in an elegant, lightweight design.
Key Features
- Advanced Smart Sensing: Upgraded multi-path optical sensors adapt to your finger for highly accurate, continuous biometric data.
- Full Titanium Construction: Premium Brushed Silver finish delivers exceptional durability, scratch resistance, and lightweight comfort.
- Comprehensive Health Insights: Tracks sleep stages, Daytime Stress, Readiness Score, Heart Rate Variability (HRV), and SpO2 levels.
- Water Resistant to 80m: Fully sealed design allows safe wear during workouts, swimming, showering, and handwashing.
Specifications
| Device Type | Oura Ring 4 Smart Ring |
| OS Compatibility | iOS & Android (via Oura App) |
| Sensors | Optical Heart Rate (Red, Green, Infrared LEDs), Skin Temperature, Accelerometer |
| Size | Size 7 |
| Material | Titanium Body with Smooth Non-Allergic Inner Molding |
| Screen / Display | None (Screenless Wearable) |
| Touch Screen | No |
| Color / Finish | Brushed Silver |
| Battery | Tested to hold a strong, healthy charge capacity (Up to 8 days battery life) |
| Water Resistance | Up to 80 meters (100m water resistant certified) |
| Hardware Upgradeability Rating | N/A - Fully sealed wearable device. |
| Memory Upgradeability | N/A (Integrated Onboard Storage) |
| Storage Upgradeability | N/A |
| Physical Ports & Expansion | Magnetic Charging Dock Interface |
Connectivity
- Bluetooth Low Energy (BLE)
What's Included
- (1) Oura Ring 4 (Size 7 - Brushed Silver)
- (1) Size-Specific Charging Dock
- (1) USB-C Charging Cable
Condition Specifics
Good Refurbished - Good Condition: Professionally inspected, thoroughly tested, and meticulously sanitized by certified technicians. This unit is 100% fully functional and exhibits moderate signs of prior use. Casing and display trim may show minor scratches, light scuffs, or subtle wear consistent with standard handling. Screens are clear without cracks, dead pixels, or functional touch impediments. Buttons, ports, and wireless components perform reliably.
Having an Issue With Your Item?
Contact us first. Our US based support team can troubleshoot most problems quickly, including setup, connectivity, charging, and performance questions. Message us through eBay and we will respond within one business day.
Free Returns, Any Reason!
Not satisfied? We offer free 30 day returns on this item no matter the reason, and you will receive a prepaid label either way.
One Small Ask From Our Small Business
When you start a return, please choose the reason that accurately describes your situation. As a small business, we review every return reason to catch real product issues and fix them in order to provide our customers the highest quality product. Regardless of the return reason, your return is always free and our support team is always here to help.
Disclaimer
The photos shown in this listing are example images that represent the typical condition and appearance of the model listed. The actual device you receive may vary slightly in cosmetic condition but will match the same model, specifications, and functional condition described in the listing. All units are fully tested and verified according to our internal quality standards.
Note: All units are fully tested and verified according to our internal quality standards. We do not open devices during our inspection or refurbishment process, and no internal components (such as batteries, screens, hard drives, etc.) are replaced.
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