Watch and listen – this marble run is a true sound experience! Once the glass marble is inserted into the red wooden ball, it begins its journey from higher tones to lower tones from the bottom section. Plus: the fresh, complementary rainbow colours make this acoustic marble run a decorative eye-catcher in the children's room! Children love to experiment! By using all sorts of different marbles, you can carry out exciting sound experiments with this elegant sound marble run: what does it sound like, for example, with a group of marbles at the same time? How does the space between the marbles change the sound effect? There's plenty of long-lasting fun to be had here! Dimensions: height approx. 37 cm, Ø approx. 16 cm. Suitable for children aged 3 and up.