Scientific Explorer Infinity Voice Encryptor is a hilarious hand-held toy that lets you disguise your voice over a bazillion different ways. This toy allows you to create different altered effects and desired voices by adjusting the alpha switches on the encryptor in different combinations. Just choose one of the switch selections, depress on the trigger to power the device and speak into the microphone. Children will have a blast using their imaginations by concealing their real voice from enemy spies, family and friends. Includes the voice encryptor and a 9-volt battery. Recommended for children 5-years of age and older.