The special effects pack is not necessary to run your vehicle, but can seriously enhance your enjoyment of the finished model.
For those looking for the ultimate in realism a sound simulator is also available which provides engine start-up, shut-down, and changes in engine volume proportional to the speed of the model. There is also a machine gun sound.
This effects pack can be purchased at the time of your order, or at a later stage, and includes our very own electronic sound system and a smoke generator.
Here is a sample of the SdKfz 222 sound.