Shaking function: Tumbler design, push and shake to enjoy great fun, attract baby to stretch out its hands to touch or do look up training. Sweet Tones: Crisp and soft sounds to protect baby's hearing, stimulate thir hearing development. Hand-eye coordination skill: Doll can swing in different directions, which can train baby's tracking ability, and improve its hand-eye coordination skills. Attractive colours, nicely shaped and very safe with no sharp edges.