The Oura Ring Gen 3 Heritage in black is a brand new, sealed box fitness technology device that offers a high display resolution of 240 x 240. It is powered by batteries and is designed for indoor and outdoor use. Made of titanium, this unisex activity tracker provides heart rate and distance measurements, with a battery life of up to 7 days. The ring also features sensors for temperature, heart rate monitoring, sleep tracking, and water resistance. It is compatible with iOS and Android operating systems and comes with a 1-year manufacturer warranty. Perfect for gym training, swimming, and running, the Oura Ring Generation 3 is a sleek and innovative tool for tracking your fitness progress.