Description
Fitbit Charge 4 is a black fitness activity tracker wristband with GPS, heart rate monitor, water resistance, and sleep tracking features. It is suitable for indoor and outdoor use, and compatible with iOS and Android systems. The device provides heart rate measurement, language support in English, and includes sensors like accelerometer, gyroscope, and radar. Designed for gym training, yoga, walking, crossfit, running, and jogging activities. Mobile app available for tracking fitness progress.