Suitable for indoor and outdoor use: the battery lasts up to 50 hours in training mode. Features a color touchscreen, side button, innovative wrist-based heart rate sensor, smart calorie counter, and GPS via smartphone. Ideal for the gym, team and group sports, swimming, running, cycling, and jogging. Personalized daily training device: can be used anytime, anywhere, and can be automatically configured after recovery and training. The device provides real-time visual guidance. It analyzes the training phase and offers detailed graphs. Load and recovery tracking tools help optimize training and prevent overtraining. Test your running and cycling performance and customize your heart rate, speed, and power zones. Activity report: overnight charging provides daily activity and training information.