Fitbit Versa 4 Smartwatch — Graphite / Black (FB523BKBK)Stay on top of your health and fitness goals with the Fitbit Versa 4 (FB523BKBK) smartwatch. It offers 24 7 heart rate monitoring, built in GPS, sleep tracking, and more than 40 exercise modes. The Daily Readiness Score feature helps you understand when your body is ready for a workout or needs recovery. With a sleek graphite and black design and interchangeable bands, it blends functionality with style. Key Features: Built in GPS for tracking