Yup, a real whistle! Wind the train up, set it down on a flat surface and watch it go in a circle, making a "whoo whooo" sound. It works great. This is New Old Store stock. It is not the reproduction currently on the market, although the two toys are similar. Size: 6 ½ long; 2 ½ high; 1 7/8 wide Condition: This toy is made of tin and plastic. The undercarriage, cow-catcher and back are plastic while the top, sides and front are tin. The tin lithography is marvelous. The brass color and contrasting orange are outstanding. The toy and finish is almost perfect. The lid is excellent, while the bottom shows a little wear on the bottom. WHOO WHOOO!