Become a super sleuth, a top secret agent;Tiptoe through the house, spying on your family, with this self-built, super sensitive listening device;Your mission, should you choose to accept it, is to unearth hidden information without getting caught!;Kit contain: Card outer body (3 pieces), electronic components, earphones and instructions;You will need a 9V battery (not included)

• Make & Build Your Own listening device - Simple Science stocking filler gift

Make & Build Your Own listening device - Simple Science stocking filler giftFizz Creations