Oura Ring 4 – Silver, Size 4 | Sleep & Activity Insights, Up to 8 Days Battery, Android & iOS

Overview

Oura Ring 4 represents the latest evolution of the compact wellness ring. Crafted with an all-titanium body and powered by Smart Sensing, it goes beyond basic tracking to deliver continuous data across more than 50 health metrics. These include sleep patterns, daily activity, readiness signals, heart health indicators, stress patterns, metabolic health cues, and women’s health metrics. The technology adapts to your routines, offering contextually relevant insights that feel personal and actionable.

With up to eight days of battery life and a minimalist, screen-free experience, you can wear it through workouts, commutes, and nights without interruption. For style enthusiasts, multiple finishes and the option to switch styles in the Oura App let you customize your look across different rings if you own more than one.

What you can learn

The Oura app translates complex data into patterns and trends you can notice over days and weeks. These insights are presented as possibilities to consider within your routine, not guarantees. Common areas include how your sleep quality aligns with activity, how recovery signals shift with stress, and how menstrual health metrics relate to daily energy levels.

• Sleep quality and duration insights help orient nightly routines
• Readiness and recovery trends offer a sense of daily resilience
• Activity and movement data support an active lifestyle
• Heart health indicators and stress metrics provide a broad well-being view
• Metabolic health cues and women’s health metrics reveal patterns over time

Fit, power, and setup

Accurate sizing is essential, and Oura provides a sizing kit to determine the perfect fit before you buy. The device emphasizes a comfortable, distraction-free wear with a long battery life that frees you from frequent charging.

• Up to 8 days of battery life on a single charge
• Discreet wear with no screens or vibrations to interrupt moments
• Interchangeable finishes and multi-ring support for easy style changes

Membership and practical details

New members receive the first month of Oura Membership included with purchase. After that, the membership is $5.99 per month, linked to your Oura App account. The ring and related accessories are eligible for HSA or FSA funds in select cases.

Whether you’re exploring daily wellness or tracking long-term patterns, Oura Ring 4 offers a thoughtful balance of data, comfort, and customization to fit into your life without demanding certainty. Consider it a potential companion for understanding your rhythms rather than a guarantee of outcomes.