Kd Toys Infinifun Musical Maracas3 catchy tunes that will carry you all the way to lively brazil! open the yellow maracas' mouth and listen as it sings it funny solos. Shake both of them to add crazy sound effects or a rattle sound to the rhythm. Helps develop motor skills by sliding open the mouth, pressing the hat and shaking the maracas. Helps develop a sense of rhythm. Features premium quality lively tunes and sound effects helps develop fine motor skills batteries: 2x aa