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Oura to enter South Korea with fifth-generation smart ring

Finnish smart ring maker Oura has officially entered the South Korean market with the Oura Ring 5, which it says is 40 percent smaller than its previous model. The company says it boosted LED output fourfold and expanded signal paths to maintain measurement quality, and offers more than 50 health metrics through its app. Oura plans to combine hardware sales with a monthly membership fee, with new features provided to subscribers.