Oura Ring 4 Charger Size 7 - Charging Dock with USB-C Cable

In this review the Oura Ring 4 Charger Size 7 is judged as the essential replacement or spare for anyone who owns an Oura Ring 4 in size 7. The bottom line: it simply works and is the only official way to power the ring, so buying the correct size is the single most important decision. The reviewer found charging to be fast and straightforward, with the simple USB-C to USB-C cable and dock making daily use low friction for those who track sleep and recovery.

Key Features

• Size-specific dock: The charger is tailored to Oura Ring 4 size 7 so the ring fits securely and aligns with the charging contacts for reliable power transfer.
• USB-C to USB-C cable: The included cable connects to an external 5Vdc supply so users can plug into common USB-C power bricks and modern laptops.
• Fast charging: The ring typically charges fully in 20-80 minutes depending on remaining battery, which keeps downtime to a minimum.
• App battery readout: Battery level is checked in the Oura app by tapping the circular icon in the upper right of the home tab, making it easy to confirm charge state.
• Safety compliance: The power cord is intended to be used with an external supply that complies with IEC 62368-1, aligning with common electronics safety standards.

Who It's For

The charger is ideal for current Oura Ring 4 owners who need a spare charger for travel, an office charger, or a replacement for a lost cable. It is also a practical buy for households where multiple people take turns charging the ring and want a dedicated dock that matches size 7.

It is not for anyone who does not own an Oura Ring 4, and buyers should not purchase a different size expecting it to work; the charger is size-specific so people who wear other Oura Ring 4 sizes should order the matching dock.

Pros & Cons

Pros

• Official, size-specific dock ensures a secure fit and consistent charging every time.
• USB-C to USB-C connection lets users charge from modern power bricks or laptops.
• Generally fast charge times of about 20-80 minutes reduce interruptions to tracking.

Cons

• Size specificity means you must confirm your Oura Ring 4 size before buying to avoid mismatch.
• The charger requires an external 5Vdc supply, which is sold separately if one is not already available.

Specifications

Product	Oura Ring 4 Charger (Size 7)
Cable type	USB-C to USB-C
Intended power	External 5Vdc supply (complies with IEC 62368-1)
Typical full charge time	Approximately 20-80 minutes
Compatibility	Oura Ring 4 (size 7)

Our Verdict

The Oura Ring 4 Charger Size 7 is a straightforward, reliable accessory that anyone with a size 7 Oura Ring 4 should consider for daily convenience or as a spare. Its size-specific design and USB-C connection make it practical and good value for keeping the ring powered and ready for accurate sleep and recovery tracking.

Frequently Asked Questions

How long does it take to fully charge an Oura Ring 4?
Typical full charge time ranges from about 20 to 80 minutes depending on remaining battery level.

Will this charger fit other Oura Ring 4 sizes?
No, chargers are size-specific; be sure to check the ring size marked on the inside of your Oura Ring 4 before purchasing.

Do I get a power adapter with the charger?
The package includes a USB-C to USB-C cable; an external 5Vdc supply is required separately if you do not already have one.