The Oura Ring Gen 3 in Silver Tone Heritage Black, Size 9, is a high-tech activity tracker designed for both indoor and outdoor use. Made of durable titanium and featuring a comfortable fit on the hand, it provides accurate heart rate monitoring and sleep tracking. With a battery life of up to 7 days, this Oura Ring is water-resistant and equipped with advanced sensors such as infrared, accelerometer, and GPS. It is compatible with both iOS and Android operating systems and comes with a 1-year manufacturer warranty. Whether you are a runner, jogger, or fitness enthusiast, this Oura Ring is a versatile and reliable tool for tracking your daily activities.