If you or your kids are crazy about the Transformers, then Hasbro has something really cool to offer you. It’s called the Transformers Voice Changing Helmet and it is now available to you. Put the helmet on and speak into the microphone and sound just like Optimus Prime. This is a perfect gift for the kids or kids at heart. The helmet is adjustable and fits head sizes from age 5 to adults. The voice changing helmet is powered by only 3 double A batteries. The Hasbro Transformers Movie Optimus Prime Voice Changer Helmet is very reasonably prices and you can also get a special online discount as well as free shipping!