Fitbit Charge 4 Model FB417

Key features of the Fitbit Charge 4 (FB417) Built-in GPS: Allows you to track your route, pace, and distance during outdoor workouts without needing your phone. Heart Rate Monitoring: Tracks your heart rate 24/7, which is used to calculate calorie burn, maintain workout intensity, and monitor your sleep. Activity Tracking: Can track a variety of activities, including swimming, running, and gym training. Sleep Tracking: Analyzes your sleep patterns and provides insights into your sleep quality. Battery Life: Offers a battery life of up to 7 days on a single charge. Water Resistance: Is water-resistant, with a dust-tight rating of IP6X and water resistance rating of IPX8 under IEC standards, allowing you to wear it for swimming. Other features: Includes a stopwatch, timer, alarm, and a physical button for navigation, which can be useful when your hands are sweaty.  *Excellent used condition, some of the screen is darker than the other half.