Very interesting construction with quality wood for ages 13+ and parents together, or for adults, always with patience, order, and determination. This particular one is quite challenging to keep you interested and requires a lot of attention and focus at every stage. On the downside, I would say that the difficulty sometimes leads to pieces separating, so you have to be very careful not to break them, and I have reservations about the rubber bands used for movement, I hope they don't break over time. However, as soon as I finish, I will get another model, it is a very creative way to spend one's time.