The Oura Ring Gen 4 Ceramic Midnight Size 15 Smart Ring is a brand new sealed activity tracker designed for unisex adults who engage in running and jogging. This smart ring provides heart rate measurements and has a battery life of up to 7 days. It is equipped with a 240 x 240 display resolution and operates on the Android operating system. Made in the United States, this ring offers a sleek design with a 2.4X external display and is both indoor and outdoor compatible, utilizing batteries as its power source. Additionally, it comes with a 1-year manufacturer warranty.
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