The American Flyer billboard whistle is a ready-to-go unit designed for model railroad enthusiasts aged 17 years and up. This 1:64 scale accessory features a green color and is made of plastic material. The set includes a remote uncoupler, adding convenience and realism to the train layout. Perfect for enhancing the detail and functionality of S gauge model railroads, this product from American Flyer is a must-have for collectors and hobbyists alike. These are part of a bigger buy and have not been tested.