Kosmos has to convince us he already past with some good kits also this one convinces the audience fully. Our 8-year-old has in the primary school just the issue of renewable energy and it was on fire when the kit arrived. Unpacked and started to play and found that even an 8 year old with the modular plug a la Lego quite well come when it just enough for interested. With Lego, he got along well, which helps before. Some small parts are a little challenging but since then accesses the breeder to courageously and helps a little. And lo and behold .... the inserted battery was charged after half a day. The charging time is probably windstärke dependent but she was the only real challenge on kit. The wait is not as the strength of our shoot. And apart from this one basic function once the statement is true: this is a wind generator, which does not make much. It turns halt and charges a battery, which runs rather unspectacular. The Spectacular is then that the torch is lit again. And even that is a joy that is of relatively short duration. Thus, the adult says with resignation that toys from pronounced didactic value, solid workmanship and good design just only adults permanently delighted - but the child is not able to captivate so far. This is also true for our men 10-year-old, who attended the assembly, together with subsequent Ladeversucht interested and gladly went to hand - but otherwise put too similar behavioral patterns to the day. So is the finding that the Kosmos box mic extremely pleased the children but rather only in the short term ...