Oura Ring 4 Charger - Size 12 - Compact USB-C Dock

In this review the Oura Ring 4 Charger is evaluated as the straightforward replacement or spare charger for owners of an Oura Ring 4 size 12. The bottom line: this is the only official way to charge the ring, and it delivers a compact, reliable charging experience that fully recharges the ring in a short window. Reviewers will appreciate that it is size-specific, easy to carry for travel, and pairs with a standard 5Vdc USB-C power source that meets the IEC 62368-1 requirement.

Key Features

• Size-specific fit: The charger is matched to Oura Ring 4 size 12 so the ring seats securely and charges without shifting.
• Fast charge time: Typical full charge completes in about 20-80 minutes depending on starting battery level, which is convenient for quick top-ups.
• USB-C to USB-C cable: The included cable uses USB-C on both ends so it works with modern power bricks and laptops with USB-C output.
• App battery readout: Users can confirm charge level from the Oura app by tapping the circular icon on the home tab for clarity on remaining battery.
• Compact and travel-friendly: Customers note the small physical size makes it easy to carry as a spare in bags or at the office.

Who It's For

The charger is for anyone who owns an Oura Ring 4 in size 12 and needs the official charging dock, whether as a primary charger, a spare for travel, or an office backup. It is especially useful for users who value short recharge times and want the secure fit that prevents interruptions during charging.

It is not for people who do not own an Oura Ring 4 or who have a different ring size, since chargers are size-specific. Those looking for a multi-device wireless or universal charger should look elsewhere, because this product is dedicated to the Oura Ring 4 form factor.

Pros & Cons

Pros

• Well made and compact, making it convenient for travel or keeping at the office.
• Charges quickly; many users report fast top-ups within the stated 20-80 minute window.
• Secure, size-specific seating prevents the ring from slipping during charging.
• Works with common USB-C power sources that meet IEC 62368-1 compliance.

Cons

• Size specificity means you must confirm your ring size before purchase to ensure fit.
• Some customers feel the official charger is pricier than a simple cable would be.

Specifications

Product	Oura Ring 4 Charger (Size 12)
Cable type	USB-C to USB-C
Intended power	External 5Vdc supply (IEC 62368-1 compliant)
Typical charge time	20-80 minutes (depends on battery level)
Compatibility	Oura Ring 4 size 12 only
Use cases	Travel, spare charger, home or office backup

Our Verdict

The Oura Ring 4 Charger for size 12 is the obvious purchase for any owner of that ring size who wants a reliable, compact official charger. Its quick charge times, secure fit, and simple USB-C connection make it worth the price for users who value convenience and a spare for travel or work. Confirm your ring size first and this charger delivers dependable performance.

Frequently Asked Questions

How long does it take to fully charge an Oura Ring 4?
Typical full charge is between 20 and 80 minutes depending on the ring's current battery level.

Will this charger work for other Oura Ring sizes?
No, Oura Ring 4 chargers are size-specific; you must choose the charger matched to the size printed inside your ring.

What power source do I need?
The cable expects an external 5Vdc USB-C power source that complies with IEC 62368-1; most modern USB-C power bricks and laptop ports meet this requirement.