This Fitbit Charge 4 activity tracker is the perfect companion for your fitness journey. With a battery life of up to 7 days, it is designed to help you track your activities such as gym and training, walking, swimming, yoga, pilates, running, and jogging. Its features include wireless, Bluetooth, average speed, alarm, GPS, clock, date, calorie monitor, and average heart rate. It is compatible with Android operating systems and comes in a beautiful brown color. The size of this tracker is L and it is made by the renowned brand, Fitbit. Used in very good condition