OURA Ring 4 Black Size 13 | Sleep, Activity & Women’s Health | Up to 8 Days Battery

Meet the OURA Ring 4

The OURA Ring 4 evolves the idea of a smart ring with an all‑titanium body and Smart Sensing. It tracks more than 50 health metrics—from sleep quality and daily activity to readiness, heart health indicators, stress, metabolic signals, and women’s health milestones. The ring sits quietly on your finger, collecting data without drawing attention, so you can move through your day with ease and confidence.

Smart Sensing that adapts to you

Smart Sensing doesn’t just log data; it adapts to your routines and rhythms to deliver continuous, day‑and‑night insights that feel meaningful to your life. With a screen‑free design, you can wear it during workouts, meetings, or evenings out and still view clear, organized insights in the app when you’re ready.

• Tracks 50+ health metrics, including sleep, activity, stress, heart health, and women’s health indicators.
• Adaptive sensing aims for consistent data across different days and activities.
• Discreet, comfortable wear that fits naturally into daily life.

Along with its sensing power, you’ll notice a sense of continuity in your data—pattern recognition over time that helps you understand how daily choices accumulate, without making promises or guarantees.

Designed for real life — the fit that fits you

The OURA Ring 4 uses a sizing kit to help you find a precise fit before you buy. The all‑titanium construction keeps the ring lightweight yet durable, and you can switch between finishes to match your style as your wardrobe changes. It’s designed for all‑day wear, from workouts to evenings out, so you can forget it’s there until you notice compliments or useful insights in the app.

• Sizing kit helps ensure a proper fit before purchasing.
• Up to 8 days of battery life supports longer monitoring between charges.
• Interchangeable finishes enable quick style updates without changing devices.
• Android and iOS compatibility keeps data synced via the OURA App.

Getting started is simple: verify your size with the kit, set up your account in the OURA app, and explore the insights that matter to you. If you own multiple ring styles, you can switch finishes in the app to match your moment. The membership option is straightforward: the first month is included with purchase, with ongoing options available afterward. The product and accessories are eligible for purchase through HSA or FSA funds where applicable, providing flexible payment options for eligible items.