Experience the joy of timeless play with our Charge `n Go Train. Charge it with the USB or turn the crank handle to power the train and watch it chug along!   Improves cognitive development: Playing with trains helps children develop their cognitive skills and also helps develop their understanding of cause and effect. Battery-free fun: Use the USB included to charge the train or turn the crank to generate kinetic energy to turn the light on and to get the train rolling. Perfecting motor skills: Manipulating the train and turning the crank handle helps refine your child's dexterity and hand-eye coordination. Compatible toy: This train can be used for independent play or with most wooden railway sets.