The Invisible UI: Why the Smart Ring Finally Killed the Smartwatch
By Marcus Osei · 7 min read
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The sun hadn't quite cleared the horizon in Brooklyn when my finger started to tell me I was tired.
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For years, the wearable market was a battle of the wrists.
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Enter the smart ring.
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Building a smart ring is an exercise in engineering masochism.
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Inside a device like the [Oura Ring Gen 3 Horizon](https://ouraring.com), you’ll find a flexible PCB (printed circuit board) wrapped around a medical-grade inner molding.
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But the real innovation isn't just the sensors; it's the power management.