Thank you for viewing. This is a brand new, unopened Oura Ring Gen 4 (4th generation). It's a brand new, unused item that just arrived from the official website. My previous model broke, and a new one arrived, but the size doesn't fit me, so I'm selling it. Retail price: 59,800 yen Product Details • Product Name: Oura Ring Gen 4 (Oura Ring 4th Generation) • Color: Brushed Silver • Size: US8 • Condition: Brand new, unopened (the box seal is also intact) • Accessories: Main unit, dedicated charger, USB cable, quick start guide, outer box (all unopened) 【High-Precision Health Management】 The Oura Ring accurately measures heart rate, sleep quality, and activity levels, helping you understand your health condition.