The Aura Ring Gen 4 Size 11 Smart Ring in Silver is a high-resolution activity tracker designed for indoor and outdoor use. Powered by batteries with a battery life of up to 7 days, this ring features an accelerometer sensor for measuring motion. Made of titanium and using Bluetooth connectivity, this unisex smart ring includes a charging/docking station and is ideal for running and jogging activities. With a display resolution of 240 x 240 and available in English, this ring is a stylish and functional tool for tracking your fitness goals.