You can use the night light with music or light. With the 3 function modes you can use either only music or light as well as both together. Turn on the music and the Goodnight Bear plays classical music and nature sounds for 10 minutes. The volume of the bear is adjustable in 3 levels. The night light is equipped with 2 color variations which creates a magical atmosphere at bedtime. You can easily attach the cuddly soft bear to the cot. The bear can be used with 3x AA batteries which are already included.