The Oura Ring Gen 4 in size 9 and brushed silver finish is a high-quality activity tracker perfect for prioritizing fitness and wellness. Made of titanium, this ring provides accurate heart rate monitoring and features a sleep tracker for comprehensive health tracking. With a battery life of up to 7 days and compatibility with both iOS and Android operating systems, the Oura Ring Gen 4 offers a seamless and convenient experience for indoor and outdoor activities like running and jogging. Includes charger, charging cable, and original packaging.