"When I seen this kit available I immediately knew this was a special build. The size of the finished model is very impressive and the controls are easy to use. Starting the built with the tracks and base with the motors I found the 1st bag contained a lot of peices. This could have been split up in to smaller bags to save the hours of sorting before the build starts. Bags number 2 is the main body of the It's the same with this, larger number of peices that could have been broken down in to smaller bags. Bags 3 build the main boom arm and bucket functions with the remaining bags 4, and 5 for detailing. This monster of a build has 7 motors and 2 smart hubs that connect to a smart device for pin point controls. While building this kit the instructions ask to test the hub as your building. I found that the app would not connect to the hub if all connections were connected. This was frustrating with the 2nd hub but after figuring out to plug all motors in for the test then it connects fine. I have had issues with the tracked hub where it would get "stuck on" even after closing the control + app and I've had to reset the hub by holding the button for 10secs. The control + app is very easy to use and the one touch, and programmable functionality is really good fun.
I would highly recommend this kit for everyone and being a 30 something adult there is nothing like digging up large amount of lego"