Choo-Choo Chuck is a whimsical train that rocks back and forth, his headlights illuminate, and his mouth moves while he sings the well known song "I’ve Been Working on the Railroad". Choo-Choo Chuck has been adapted for use with a single, standard 3.5 mm switch (sold separately). Press and release the switch or push his button directly to activate him. Measures approximately 8" long. Requires 3 AA batteries, included.