You can manage GÄN device through Bluetooth of your Smartphone with GÄN App. Some operating modes are available. You can choose from fuel saving Eco mode to the most powerful Sport mode. "Warm-up" function allows you to take care of the engine in cold seasons. Demo mode allows you to evaluate the App without purchasing the GÄN device. You can change the spirit of your car with GÄN App and GÄN devices. Believe, your car is able to surprise you!!!!