Clip & Go Musical Mobile The Clip & Go Musical Mobile has exciting new features for more flexibility and variety, and is made for 2 stages of baby's visual development. And since it's battery operated, it offers continuous classical music with no need for winding and rewinding. Features: Double sided for 2 developmental stages. 0-3 months: Contrasting black, white and red elements for baby's early development 3+ months: 3-dimensional colorful soft dangling animals for baby's further visual development Easy change from one stage to another Specially designed clip for easy attachment Age: birth +