Oura Ring 4 vs. Oura Ring 3 — my favorite smart ring just got these big upgrades

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There are some big changes to known between Oura Ring 4 vs. Oura Ring 3. Here's how they compare in terms of specs, design, fitness-tracking, battery life and more.

Oura Ring 4 vs. Oura Ring 3 — my favorite smart ring just got these big upgrades : Read more