Oura Ring 4 Stealth (Size 5) – Sleep, Activity & Womens Health | AI Advisor | 8 Days Battery | Android & iOS

Meet Oura Ring 4 Stealth

Oura Ring 4 Stealth represents the latest evolution in discreet wellness wearables. Crafted from durable all titanium, it sits lightly on your finger and blends into daily life while quietly gathering data that can illuminate your habits.

Smart Sensing powers more than 50 health metrics across sleep, readiness, activity, heart patterns, stress signals, metabolic indicators, and womens health metrics. The ring doesn’t merely log biometrics; it adapts to your routines and offers personalized insights, helping you understand patterns without overwhelming you with data.

What this can mean for your day

• Sleep and recovery indicators that help you plan tomorrow’s activities
• Activity and readiness scores to guide workouts or rest days
• Heart health signals and stress patterns mapped to your daily rhythm
• Womens health metrics reflecting cycle-related trends and patterns

Design, wearability, and battery life

The all-titanium build is slim and light, designed for comfort from morning routines to late-night activities. With up to 8 days of battery life and a screen-free, vibration-free experience, you can wear it during workouts, commutes, and sleep without interruptions.

For accuracy in fit, Oura offers a sizing kit to determine your best size before you buy, reducing guesswork and returns while ensuring a steady wearing experience.

Flexibility, access, and perks

• Multi-ring support lets you switch finishes in the Oura App for different looks without buying new rings
• First month of Oura Membership is included for new users; ongoing access is 5.99 per month, linked to your app account
• HSA or FSA eligibility applies to Oura Ring purchases and related accessories

Getting started

Pairing works with both Android and iOS devices, and your data syncs seamlessly to the app. The experience emphasizes daily practicality: you’ll see patterns and trends that can inform how you structure sleep, activity, and rest periods. Individual results vary, and the insights are best used as a reference to understand your own rhythm over time.