A pop-pop boat is a toy with a very simple steam engine without moving parts, typically powered by a candle or vegetable oil burner The Boat Kit comes with a dropper, an instruction manual and a candle. For Reusing the candle kindly pour some oil with a wick and then light it up for the boat to move again The boat produces a loud pop pop putt putt sound. NOTE: Please insure parents/adult supervision while kids playing. Toy Boat is made from recycled Tin material. Please remember this fact before order. Also Note Product batch being different so the colors & pattern may have a little difference from Pics Shown