Geeker Speaker Lab

Product dimension:22.5x28x6.5cm
-Turn almost anything into a boom box with this vibration speaker!
-Learn about the science of sound
-Make sound waves visible with this awesome device called a vibration speaker.
-It turns practically any surface into a larger speaker.
-The audio jack connects to standard audio output sockets.
-Stick the speaker onto a variety of surfaces and objects to find out which materials produce the best sound.
-Experiment to see sound waves ripple through a tray of sand, water, and other substances.
-With signal generating apps, you can experiment to visualize different sound wave patterns.