solar bullet Metro train DIY educational toys

solar train powered by solar, no extra battery is needed, ECO-friendly This solar-powered kit helps kids understand the beneifts of renewable energy while creating their own fun,battery-free toy. It is excitting to watch solar energy make the product come to life,and this hand-on approach to science and building creates a tangible lesson in solar energy for girls and boys alike. Youngtrain lovers will expectillay enjoy assembling and re-assembling these easy-to-build equine choices. specification: productsize: 17.5*2.5*2.5cm one set in a color box @ 20.5*15.5*4.5CM, 36pcs in an inner carton, 72pcs in a solid carton @ 64.5*30.5*48cm G.W. / N.W.: 10.7/8.2KG