Baby Bouncing Sensory Dancing Ball - This Adorable Motorized Bouncing Ball Encourages Inquisitive Babies And Toddlers To Jump, Hop, Dance, And Crawl As It Vibrates And Rolls Across The Floor All By Itself. Interesting Sounds, Joyful Music Can Encourage Children To Explore And Recognize New Things. Make Your Baby Very Happy - Train Children&39;s Eye And Hand Coordination Ability To Develop Creative Imagination. Chunky Sized Bumps Encourage Reaching, Grasping, And Transferring From One Hand To The Other, The Right Switch Means That The Ball Will Jump For 10s And Play 3 Songs When You Pat The Ball Again. Safety And Environmental Protection Material - Made Of Abb Plastic, It Is Not Only Safe And Environmentally Friendly, It Is Resistant To High Pressure And High Temperature, And The Surface Is Round And Lustrous, Which Is Convenient For A Baby To Catch. Three Mode Switches - Dancing Ball Has Two Types Of Modes And Is Interesting And Playable For Choice. The Left Switch Means That It&39;s Off. The Middle Switch Means That The Ball Will Jump For 5s And Play The Song When You Pat The Ball. The Right Switch Means That The Ball Will Jump For 10s And Play 3 Songs When You Pat The Ball Again. The Ball Requires 4 Aa Batteries, Which Are Not Included.