Oura Ring 4 - Silver - Size 10 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life Silver 10

TLDR Review: Oura Ring 4 Silver (Size 10)

Published: December 27th, 2025

Pros

  • β€’Extremely comfortable and convenient to wear 24/7, including during sleep, with a sleek and stylish design that doubles as elegant jewelry.
  • β€’Accurate tracking for menstrual cycle and useful for natural birth control monitoring.
  • β€’Waterproof construction makes it suitable for swimming and handling everyday activities, including time with kids.
  • β€’Impressive battery life lasting up to 8 days with quick charging (15 minutes yields several days of use).
  • β€’Offers comprehensive health and fitness tracking including sleep, recovery, metabolic health, stress, and women’s health.
  • β€’Higuality titanium build ensures durability and excellent comfort even overnight; easy to clean.
  • β€’Connectivity with devices like Samsung Z Fold6 is smooth and app updates are frequent and helpful.
  • β€’Intuitive, useriendly interface with detailed, personalized health insights over time, especially after about two weeks of use.
  • β€’Provides discreet, powerful health monitoring without feeling like a bulky smart device or smartwatch.
  • β€’Responsive customer service that quickly handles issues like battery replacements.

Cons

  • β€’Heart rate tracking is infrequent and not suited for active exercise; readings occur every 10 to 30 minutes with no option for continuous or reaime monitoring during workouts.
  • β€’Workout tracking focuses mostly on GPS routes with minimal exercise heart rate data, limiting fitnespecific insights.
  • β€’Stress detection can be inaccurate, often mistaking normal activities like eating or relaxing for stress.
  • β€’Many basic metrics such as step count and detailed data require a paid subscription; without it, users see only limited readiness scores based on minimal data.
  • β€’The ring may cause skin irritation for some users when worn continuously for 24 hours.
  • β€’Thickness and bulkiness can feel intrusive during some activities, like weightlifting.
  • β€’Nighttime light sensors might bother very sensitive sleepers, though this can be managed by covering the hand.
  • β€’The pricing varies significantly between sellers, causing hesitation and confusion about the best deal.
  • β€’Oura Ring 4 sizing is not standard US ring sizing; purchasing and using the sizing kit beforehand is critical to ensure a proper fit.
  • β€’Manual heart rate checks require stillness for 30 seconds, making them impractical for ohe-fly fitness measurements.

Bottom Line

The Oura Ring 4 is a sleek, high-quality smart ring perfect for users who want deep sleep and health insights wrapped in a stylish, comfortable form. It truly shines as a daily wellness companion that quietly tracks a broad range of biometrics, but it falls short for those seeking robust workout or continuous heart rate monitoring. Keep in mind the need for a sizing kit to get the right fit, and that a subscription is essential to unlock meaningful data beyond the basics. If you want a device with stronger real-time exercise tracking, you might want to explore smartwatches or fitness bands specialized for workouts instead.

How we researched this

About this review: We pulled together findings from professional reviews and hundreds of user reviews, and cross-referenced them with ShopSavvy's pricing data from thousands of retailers to give you the short version.

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