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  "path": "/wellness/smart-rings/oura-ring-5-vs-oura-ring-4-whats-changed-for-the-worlds-smallest-smart-ring",
  "publishedAt": "2026-05-31T06:00:00.000Z",
  "site": "https://www.tomsguide.com",
  "tags": [
    "Smart Rings",
    "Fitness",
    "Wellness"
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  "textContent": "Some big changes are coming with the Oura Ring 5 vs Oura Ring 4. Here's how they compare for size, specs, design, fitness tracking, battery life and more.",
  "title": "Oura Ring 5 vs Oura Ring 4: What's changed for the 'world's smallest smart ring'?"
}