Oura Ring 4 Charger Size 6 - Fast USB-C Charging Dock

In this review the Oura Ring 4 Charger (Size 6) is examined as the straightforward way to keep an Oura Ring 4 powered for daily wear. This charger is aimed at Oura owners who need a reliable, fast charging accessory that is size specific, and the single biggest reason to buy is its speed and simplicity: the ring typically reaches a full charge in 20-80 minutes using the supplied USB-C to USB-C cable. For anyone who relies on the ring for sleep and activity tracking, having a dedicated, compliant charger removes a common point of friction.

Key Features

• Size-specific dock: The charger is tailored to Size 6 rings so the ring seats securely and aligns with the contacts for consistent charging.
• USB-C to USB-C cable: The included cable connects to modern power sources and supports the intended 5Vdc input for safe operation.
• Fast charging: The Oura Ring 4 typically charges fully in 20-80 minutes depending on remaining battery, which reduces downtime between uses.
• App battery readout: You can monitor charge level in the Oura app by tapping the circular icon in the upper right of the home tab for quick status checks.
• Safety compliance: The cable is intended to be used with an external 5Vdc supply that complies with IEC 62368-1, which helps ensure safe power delivery.

Who It's For

Owners of an Oura Ring 4 who specifically have a Size 6 ring and want a dedicated, manufacturer-intended charging solution will appreciate this charger. It is best for users who value minimal fuss and fast top ups between days of tracking or before an overnight sleep session.

It is not suited for people who own a different Oura Ring size or who expect a universal dock to fit multiple ring sizes, since the product is size-specific and must match the size stamped on the inside of the ring.

Pros & Cons

Pros

• Reliable fit when matched to the correct ring size, offering consistent contact for charging.
• Fast charging that can restore the ring in a short window, useful for daily users.
• Includes a modern USB-C to USB-C cable compatible with common chargers and power banks.
• Clear battery monitoring through the Oura app simplifies charge management.

Cons

• Size-specific design means it will not work with rings of other sizes, requiring careful purchase.
• Charger requires an external 5Vdc supply that meets IEC 62368-1, so users need a compatible power adapter or USB-C source.

Specifications

Product	Oura Ring 4 Charger (Size 6)
Compatibility	Oura Ring 4 (must be Size 6)
Cable	USB-C to USB-C
Typical full charge time	20-80 minutes (dependent on battery level)
Power input	External 5Vdc supply required (IEC 62368-1 compliant)
Battery status	Displayed in Oura app home tab circular icon

Our Verdict

The Oura Ring 4 Charger Size 6 is a practical, no-frills accessory for anyone who owns a matching ring size and needs fast, dependable charging. Its main strength is convenience: quick top ups, a secure fit when sizes match, and app integration for monitoring. It represents good value for Oura 4 users who want the intended charging method and are comfortable providing a compliant 5Vdc power source.

Frequently Asked Questions

How long does the Oura Ring 4 take to charge?
The ring typically charges fully in 20-80 minutes depending on its current battery level.

Will this charger work with other ring sizes?
No, the charger is size-specific; you must use the charger that matches the size stamped on the inside of your ring.

What power supply is required?
The included USB-C to USB-C cable is intended to be used with an external 5Vdc supply that complies with IEC 62368-1.