Oura Ring 4 Ceramic Tide – Sleep, Activity, Women’s Health, AI Advisor, 8-Day Battery | Android & iOS

Introducing the Oura Ring 4 Ceramic Tide

The Oura Ring 4 Ceramic Tide blends a refined zirconia ceramic exterior with breakthrough sensing to deliver a quiet, continuous picture of your health. Powered by Smart Sensing, it adapts to your finger to provide accurate data day and night, tracking more than 50 health metrics across sleep, activity, readiness, stress, heart health, metabolic health, and women’s health. With up to 8 days of battery life and recessed interior sensors, it’s designed for comfortable wear through daily routines and nighttime rest.

What you’ll experience

• Sleep insights include duration, quality, and circadian patterns to help you understand nights and recovery.
• Activity levels and readiness context your workouts and daily movement.
• Stress indicators, heart health data, metabolic signals, and women’s health metrics woven into personalized insights.
• Up to 8 days of battery life supports extended wear without frequent recharging.
• Discreet, recessed sensors on the interior offer comfort for extended wear and sensitive skin.
• FSA/HSA eligible purchases simplify budgeting for wellness devices.

Design, comfort, and everyday use

The Tide color adds a sleek, modern accent to daily outfits. The ceramic exterior is durable yet refined, built to move with you through workouts, workdays, and evenings. With no screens or vibrations, you can stay focused on the moment while your ring quietly gathers insights.

Key benefits at a glance

• Tracks 50+ health metrics with continuous data for a broad health picture.
• Personalized sleep, activity, readiness, and wellness insights.
• Comfortable wear thanks to recessed interior sensors and smooth ceramic design.
• Long battery life supports multi-day wear between charges.
• HSA/FSA eligible and easy to use with the Oura app.

How to use and membership perks

• Size matters: use the Oura Ring Sizing Kit to find your perfect fit before buying (sizes 4–15).
• Pair with the Oura app on Android or iOS to access insights anytime.
• First month of Oura Membership is included; afterward, the plan is 5.99 per month, linked to your account.

Care and maintenance

Over time you may notice grey marks from metal transfer; they’re not damaged and can be removed with proper cleaning. The Ceramic Polishing Pad helps keep the ring looking like new. For certain activities, consider removing the ring to protect the surface from wear.

Sizing and colors

In addition to the Tide finish, sizes range from 4 to 15 to fit a variety of fingers. A sizing kit helps ensure the best fit for comfort and data accuracy, reinforcing the overall wearing experience across everyday use.