Developer's DescriptionBy Lionel, LLCThe Lionel LionChief App lets you control Lionel LionChief and LionChief Plus BLE locomotives from your Android device.The Lionel LionChief App lets you control Lionel LionChief and LionChief Plus BLE locomotives from your Android device. Select between multiple available locomotives via icons matching the appearance of each unique engine. Once selected, the app provides all the features of the Lionel LionChief hardware remote control and adds additional features including individual volume controls, pitch customization of bell and whistle, remote smoke on/off, speed limit, momentum and more.For a video on how-to install and use the APP, click on this link: https://youtu.be/dR2vIBdqN7c