Boasts a 1.57 inch super retina high - definition large screen with a resolution of 200*320. Enjoy bright colors and clear details, along with a high refresh rate for silky smooth touch operation. Monitors your heart's electrical activity. After measurement, view detailed analysis reports via the app to understand potential heart health risks. Accurately records data like steps, calories burned, exercise duration, heart rate, pace, and distance for various activities (running, cycling, etc.). Assists in achieving fitness goals with scientific exercise tracking..syi