Building kit Hybrid Marble Run De Stair Runner on Solar energy or battery wood

Build your own solar or battery-powered marble track.   Let the sunshine hit the solar panel and the marbles will start rolling.   A fascinating spectacle.    Dimensions (l x w x h, in cm.):15x12x17 Difficulty: Easy Construction time: approximately 1 hour Package contents: - Wooden building plates where you can easily print out the parts - engine - solar panel - wiring - glue - 3 steel marbles - battery box (batteries not included - 2x AA) The instructions for use are in English, but consist almost entirely of clear photos, All wooden building kits from Kitcreatives are made of higher quality FSC-certified wood.