It consists of 15 steps of bright colors with 7 different modes that change the color of each step, and the starting position. When you make noises such as clapping, shouting or singing, the lights will reward you. The staircase of color is one of the favorite instruments of speech therapists as it encourages vocalization, breath control and volume control, always using a simple visual effect. It has high sensitivity and light system that will allow you not having to change bulbs. Food: red 107 x 38 x 20 cm. OPTIONAL: MASKS FOR STRAIGHT FLUSH - EM.3411 / 1 3 masks to give more life to the steps. They come in a series of three different drawings and easy ways to connect to the stairs.