Assembly size (long wide high/mm) steamboat:121，61，86.Windmill:154，153，239.Dog:46，64，68，Cars:70，54，34.Aircraft:154，61，94.Aircraft rotation:218，61，166.Solar battery life (years old):about 3-5 years.Solar cells:we are using the high performance of solar panels，as long as can use under the sun light Please note that some products will need the sun's rays vertical irradiation on the solar panels to use 90 degrees (this actually means the solar panels are useless!Can use 21 pieces of components，assembled out of six different modelling fun solar toys to include:the hovercraft，windmill，dog，cars，airplane，rotation planes，it is not the kind of building blocks to gawk，but they will move oh!Sunlight solar panels，and provide a steady stream of power for small toys The toys can give full play to and cultivate children's imagination Creativity，and does not need the screw connection，just simply to hold the assembly can be completed，Let the children to enjoy a sense of accomplishment brought by myself For younger children，its operational stronger and safer��?��?��?