This is a very basic electronic DIY kit for electronics beginners. There are few LEDs in the circuit that can be turned on by sound. The larger the sound intensity the more the LEDs glow. There is a microphone in the circuit which is sensitive enough to pick surrounding sounds.
The schematic of the kit is shown below:
Check out all the images below for assembly tips. You can also see these images on Flickr.
Other images of the kit