Case Closed (Detective Conan) by Gosho Aoyama:
Science Fiction Inventions, Technology and Ideas

Case Closed is also called Detective Conan; it is a detective manga and anime series by Gosho Aoyama. It has been published regularly since 1994 in Japan.

The main character is 17 year-old Jimmy Kudo, who is given an illegal poison which regresses him in age to about six years old. He takes on a secret identity to protect himself. Select an invention:

Tracing Glasses - find criminals now
Locate criminals by using glasses to pick up signals from special transmitters.

Voice-Changing Bowtie - hey, it's me
Special device allows wearer to take on the voice of another person at will.

 

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