... .5v-4.5vpower: 0.5wBattery: AG10x3pcs 1,sound box used in children's book , toy, education and so on.2,the sound and ... can be designed 3,OEM 4,ABS material1,sound box used in children's book.2,Sounds including the animal series,traffic ... can be designed by customer4,Fit for children to listen and see at the same time,making learning more easier WT music box