Open box- never actually used. The Oura Ring Gen 4 Size 9 in Rose Gold is a high-quality activity tracker designed for both indoor and outdoor use. With a display resolution of 240 x 240, this ring provides accurate heart rate monitoring and sleep tracking features. It is powered by batteries with a battery life of up to 7 days and is compatible with iOS and Android operating systems. Made of durable metal, this Oura Ring is a stylish and functional tool for fitness enthusiasts looking to track their activities and improve their overall health.