The walker rewards babies every step of the way. All baby has to do is hold onto the handles, take a small step and the toy immediately begins playing a fun melody. But the melody stops when baby stops- encouraging those next few steps. The shape sorter, lights effects and sound fames also turn it into an activity center that helps stimulate imaginations and strengthen coordination skills. Requires 2 AA batteries (not included). Ages 9 mos.and up.18"H x 16"L x 25"D