Oura Ring 4 Brushed Silver, Size 8 | Sleep, Activity & Women’s Health — AI Advisor, 8 Days Battery, Android & iOS

Meet the Oura Ring 4

The Oura Ring 4 introduces a refined, all-titanium design that sits subtly on your finger while gathering meaningful insights. Built around Smart Sensing, this smart ring adapts to your routines to deliver data on more than 50 health-related metrics. Expect a comfortable, lightweight experience that you can wear all day and night, with battery life designed to keep you powered for days at a time.

From sleep quality to daily activity, readiness, heart health, stress, metabolic signals, and women’s health metrics, Oura Ring 4 aims to provide a clear picture of how your body is performing. The ring’s instinctive design minimizes distractions so you can stay present in the moment, while the data you collect helps you notice patterns over time. When you want to switch styles, you can do so easily thanks to multi-ring support, and if you own multiple finishes, you can toggle between them in the Oura App.

What it tracks and how it helps

• Over 50 health metrics including sleep, readiness, activity, heart health, stress, metabolic signals, and women’s health metrics, all supported by Smart Sensing that adapts to you day and night.
• Continuous data collection across day and night helps you spot patterns and trends without pulling focus from your routine.
• Insights come in through the companion app, allowing you to review trends, compare nights, and plan lighter or more vigorous days as needed.
• Multi-ring support lets you switch finishes easily in the app if you own more than one look.

Designed for real life

• All-titanium construction provides a durable, lightweight feel you can wear during workouts or at work.
• No screens or vibrations means fewer distractions while still gathering meaningful data.
• Works with Android and iOS through the Oura App for seamless syncing and interpretation of your data.
• Sizing is specific to Oura Ring; use the sizing kit to ensure a precise fit before purchase.
• Battery life reaches up to eight days per charge for extended use between sessions.
• First month of Oura Membership is included for new users; ongoing membership is optional and app-based.
• HSA and FSA eligibility is available for the ring, chargers, and shipping in eligible regions.

Getting started

Ready to explore your own data? Choose your size with the sizing kit, set up the Oura App on your device, and begin exploring what your numbers may reveal about your daily routine and sleep patterns. The ring is designed to be worn comfortably, so you can forget it’s there—until you notice the useful insights it provides.