Includes everything kids need to build a working voice changer. Kids can choose to have a scary, squeaky, robotic, or booming voice. Ages 8+ Package: 11"w x 8.5"h x 3"d Batteries: One 9-volt Book: 24 pages, full color Author: Paul Beck Case Pack: 6 Item #: D7057 UPC: 9 83450 90013 0

Learn about voices, vibration, and how sound is created and digitally altered.