Color Recognition - The Cognition of different colors and shapes, Resistant to play - A multifunctional piano fitness frame to accompany the baby more than 18 months, Promote muscle development - the 3 month old babies can lie down & tap on the piano keys as well as touch the pendant which will promote of the muscle development of arms and legs, Hand-eye coordination- Six months old babies can sit and play the hanging ring bell, which will train grasping capability and flexibility of babies small hands, Auditory development- When babies tap on the piano keys, it will send out the sound of different music and thus stimulate babies sense of hearing.