Ultraman DX Guts Hyper Keys #Ultraman #GutsHyperKey This is a used item that my son used. When I press the buttons, some of them make sounds, and some don't. I don't know if they didn't make sounds from the beginning, or if the batteries need to be replaced. I'm not familiar with them, so I'm not sure. The ones that make sounds are the gold, light blue, and navy blue ones that are in the package. The light green one was a bonus when I bought apparel, I think. Thank you.