"I was very happy with the building process, I liked the new colors and the small details that were included in this build. However once finished I was very disappointed with the pnumatic system. The power functions only really half worked. The arm raises and lowers the way it should, however the "blades" that are supposed to open and close seem to require manual assistance. You can see them trying to work, but just can't do it under it's own power. It's not too bad if it is just a display piece, but it's not too good if you want to be able to play with it as it is advertised. I was very disappointed in the end, and found myself wishing that Lego had gone fully electric with this model rather than using pnumatics."