The Samsung Galaxy Watch 4 is highly popular for its advanced fitness tracking capabilities. It comes equipped with a variety of sensors and features that allow users to monitor their health and fitness activities. The watch can track your heart rate, sleep patterns, steps taken, calories burned, and even provide personalized workout recommendations. With its built-in GPS, you can accurately track your outdoor activities like running, cycling, and hiking. The Galaxy Watch 4 also offers automatic workout detection, making it convenient for users to keep track of their exercise routines.