Erector Evolution Helicopter Build an amazingly detailed, fully functioning, motorized Rescue Helicopter that you can actually play with and enjoy Flip the switch to activate the motorized main rotor, jet turbine and rear rotor and speed to the rescue (4 AA batteries required, not included) Build the gear train to power the wheels and drive forward and reverse Hover over the target and drop the working rescue winch from the side of the copter, bring the rescued swimmer back to the safety of the bird Comes complete with customizing decals, assembly tools and a detailed instruction booklet to build 2 models; 640 pieces, for ages 10+