If you shake gently with your hand, the ball may not shake and you have to beat the ball. | This is an animated sound that jumps, dances and crawls as it vibrates and rolls on the floor.Train children's eye and hand coordination ability to develop creative imagination | It's their first step toward independent movement. Toys at this stage are designed to engage baby’s senses and take advantage of their newly found skill | Dancing ball have two types of mode is interesting and playable for choice.Turn the switch into the middle position and beat the ball，it will dance with music for 5 seconds.Turn the switch into the third position and beat the ball，it will dance with music for 10 seconds.There are three kinds of music in total | This adorable self-rolling, self-bouncing motorized ball will encourage your toddler to follow it happily crawling, walking or jumping.Interesting sounds and bouncing balls attract babies and encourage them to explore and recognize new things,Xmas Christmas New Year's gift