Let everyone know you're coming when you toot on our fun LED Train Whistle! Each frosted white 7" LED Train Whistle can be printed an all 3 sides and lights up in bright multi color lights! 2 non-replaceable CR1220 batteries are included and installed. Push the small black button on the bottom to cycle between 7 different light modes including fast blinking (multi color, red, green, and blue), slow color morphing, and multi color steady on. Perfect for the train enthusiast, engineer, or a fun museum night promotional!