Oura Ring 4 - Black, Size 10 | Sleep, Activity & Women’s Health | AI Advisor | Up to 8 Days Battery

Meet Oura Ring 4

Oura Ring 4 is the next evolution of the popular smart ring, designed for everyday wear that blends into your routine. Crafted in a modern all‑titanium frame, it stays comfortable while quietly gathering data through Smart Sensing. The result is continuous insight across more than 50 health metrics without interrupting your day or night.

What it tracks and how you can use it

With support for sleep, readiness, activity, heart health, stress, metabolic signals, and women’s health, you can explore patterns that matter to your daily life. The data is presented in the Oura App in an approachable way, so you can notice trends over time, from turning in for a calmer night to pacing recovery after workouts.

• Smart Sensing adapts to you, delivering consistent data day and night without the need for screens.
• Track over 50 health metrics to understand sleep quality, activity level, and physiological signals.
• Quiet, comfortable wear that blends into daily life, from workouts to evenings out.

Fit, sizing, and wearability

Oura Ring 4 uses a sizing approach different from standard jewelry rings. Use the included Sizing Kit to determine your best fit before purchasing, helping you wear it comfortably all day long. The ring’s durable titanium build supports long-term wear with a light, low-profile feel.

• Accurate sizing guidance helps you find your perfect fit before you buy.
• All‑titanium construction offers strength with a lightweight, low-profile silhouette.
• Multi-ring support lets you switch finishes in the Oura App if you have multiple styles.

Battery life, ease of use, and eligibility

With up to 8 days of battery life, you can wear the ring through workouts, daily routines, and nights out without constant recharging. There are no screens or vibrations to disrupt your focus, letting you stay present in the moment. For new members, the first month of Oura Membership is included, with ongoing access available at a monthly rate thereafter.

• 8 days of battery life supports continuous monitoring with minimal fuss.
• First month of membership included for new users; ongoing access within the app.
• HSA/FSA eligible purchases available for the ring, additional chargers, and shipping.

Compatibility and ecosystem

Oura Ring 4 is designed to work with both Android and iOS devices, pairing with the Oura App for comprehensive metrics, insights, and goal tracking. If you value a discreet, data-driven companion that blends into your life, this ring aims to offer usable, real‑world insights without pressure.