His favourite part is the drill as it turns in both directions making it fun for him to screw and unscrew the bolts.
The sounds are lifelike and my son loves pressing the buttons.
I do recommend this for a child who loves construction as while they are playing with a fun toy they are developing coordination abilities, creativity with puzzle-solving and hand-eye coordination.
Also, my 5-year old daughter had fun with this too. We played games of who can assemble the fastest