The Discovery Mindblown Levitating Train Set lets you build a real working model train!  Everything you need to build your own functioning track and futuristic train is included, so you can tinker and build away like a real engineer. Features: EXPERIMENT WITH POSITIVE AND NEGATIVE FORCES: Now you can witness firsthand the mesmerizing effects of magnets and electromagnetic fields have on the physical world! Watch as the train powers itself on the magnetic force! A CHALLENGING PUZZLE: With generous 150+ pieces included, the set provides a challenging but rewarding puzzle for those brave enough to take it on! Test the limits of your logic (and patience!) as you assemble this intricate, moving puzzle RECHARGEABLE USB POWER: A charging USB cord is included to power your train. A built-in Li-Po rechargeable battery means this all-inclusive kit is ready to use out of the box, no additional batteries required! Specifications: Dimensions: H:31.8 x W:38.1 x D:7.6 cm Colour: Yellow Model Number: