DIY STEAM 3D Puzzle Wooden Toys Mini Guitar Models For Children Kids Toy Gift Student Science Project Experimental Kit

Features:

When we flick a rubber band with our fingers, a wonderful sound comes out. Sound is produced by the vibration of an object and the level of sound is determined by the frequency of the vibration, the higher the frequency, the higher the sound. When you move your finger over a rubber band, the vibration of the band causes the air around it to vibrate, thus making a sound.

Notice:

1.Product packaging bag random

2.Suitable age: over 8 years old

3.Material: wood

5.Weight: about 17.8g