Oura Ring 4 Brushed Silver Size 4 - Smart Ring for Sleep & Fitness

Our review of the Oura Ring 4 in Brushed Silver finds it best suited to users who want a discreet, 24/7 wearable that prioritizes sleep and recovery insight. The single biggest reason to buy is its combination of continuous Smart Sensing and a titanium design that is comfortable enough to wear day and night while delivering sleep, heart and readiness metrics that many users find more accurate than wrist trackers. Do size carefully first, because Oura uses unique sizing and the company recommends the Oura Ring 4 Sizing Kit for the right fit.

Key Features

• Smart Sensing: Adapts to the wearer to provide accurate, continuous data across sleep, activity and heart health for more personalized insights.
• All-titanium design: Combines durability and a lightweight feel so the ring is comfortable for 24/7 wear, including for sensitive skin.
• Up to 8 days battery life: Long battery life means fewer charges and less interruption to tracking during workouts or nights out.
• Extensive metric set: Tracks over 50 health metrics including sleep stages, readiness, activity, stress and women's health features for broad monitoring.
• App and integrations: Syncs with iOS and Android and integrates with over 40 apps such as Apple Health, Google Health Connect, Strava and Flo for a unified health view.
• Membership model: Includes one month of membership for new users, with optional monthly or prepaid annual plans to access advanced insights.

Who It's For

The Oura Ring 4 is aimed at people who want a low-profile health tracker focused on sleep, recovery and heart metrics rather than a screen-driven wearable. It suits professionals and fitness-minded users who prefer a ring form factor to a wrist device and value long battery life and a premium, titanium build.

It is less appropriate for those who need constant on-device notifications, a visible display, or who are unwilling to size the ring using the Oura Sizing Kit. Also consider alternatives if you need rugged outdoor features or sports-specific metrics not emphasized by this ring.

Pros & Cons

Pros

• Comfortable, refined titanium design made for 24/7 wear and water resistance.
• Strong sleep and recovery tracking powered by adaptive Smart Sensing.
• Long battery life that reduces interruptions to tracking and daily use.
• Broad app integration and data export options for deeper health analysis.

Cons

• Sizing is unique and requires the Oura Ring 4 Sizing Kit to get an accurate fit.
• Some users report mixed experiences with battery life and occasional durability concerns.

Specifications

Brand	OURA
Model	Oura Ring 4
Finish	Brushed Silver
Size	Size 4 (unique Oura sizing)
Battery life	Up to 8 days
Materials	All-titanium ring
Compatibility	iOS and Android, integrates with 40+ apps

Our Verdict

The Oura Ring 4 is a strong choice for anyone who prioritizes accurate sleep and recovery data in a discreet, durable form. Buy it if you value continuous, personalized health metrics, long battery life and premium materials; just be sure to size with the official Sizing Kit and factor the optional membership into ongoing cost.

Frequently Asked Questions

Do I need a membership to use the ring?
The first month of membership is included for new users; advanced insights require a subscription which is available monthly or prepaid annually.

How do I choose the correct size?
Oura Ring 4 uses unique sizing, so measure with the Oura Ring 4 Sizing Kit before purchasing to ensure the best fit and sensor contact.

Will it work with my phone?
The ring is compatible with iOS and Android and syncs with many health apps including Apple Health and Google Health Connect for consolidated data.