The beautiful mushroom mobile lights up while the baby peacefully dreams. Pull on the little bird to hear a song. The little bird is pulled back into a funny frog while the song plays. The music box can be easily attached to the crib or stroller with the clip. 3 AAA batteries are included. Contents: 1 mushroom music box with light. Product size (cm): 22.86 x 15.62 x 15.62. Packaging size (cm): 22.86 x 16.51 x 16.51.