Construct and demonstrate your own speaker
Plug it into any audio source: radio, mp3, or cd and hear the results
Understand how sound travels, how different materials make it louder, or feel the sound waves
Contains 2 magnets, 20'' of copper wire, washers and a standard audio jack
Complete instructions are included

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 3.6 inch
Height : 3.5 inch
Length : 3.8 inch

Item Weight: 0 ounce (View shipping rates and policies)
Shipping Weight: 2.4 ounce (View shipping rates and policies)

ASIN : B00657PNC2