Promote Muscle Development-The three-month-old babies can lie down and kick on the piano keys as well as touch the pendant, which will promote of the muscle development of arms and legs. Color Recognition-The cognition of different colors and shapes.; Hand-eye Coordination-Six-Months-old babies can sit and play the hanging ring bell, which will train grasping and capability and flexibility of babyÂ’ small hands. Four adorable animals attach around the center beam to serve as toys for your babyÂ’s imaginative play and social development. A mirror helps your little baby understand the concept of object permanence.