Solder your own listening device that allows you to listen to the quietest sounds using the principles of a directional microphone.
Develop basic soldering skills and learn about simple components and placement on a circuit board.
38pcs – Everything required to build your own Bionic Ear kit. Become a secret spy!
Includes USB Soldering Iron and solder.
Requires 9v battery (not included)
Suitable for ages 12+ with adult supervision