The breathing it actually the breathing box that you can buy at the costume shops $6.99. I cut off the small speaker and place a "black" 3" speaker on it. Then I crack open the box and soldered a toggle switch on. This increased the sound and once in the helmet it adds a deeper sound. Like a big DJ speaker does. I then mounted it on top of the inter helmet and now I have breathing in Vader.... And will it be a hickory smell from Anakin?