1.Height of the baby walker can be adjusted to different positions as the user need. 2.The chassis support can effectively secure the boby of the vehicle. 3.The vehicle is equipped with a music panel painted with cartoon figures.A touch on the button of the panel will bring you a piece of pleasant music. 4:with CE ,ROHS,F963, EN-71(-1-2-3) and three C certification. 5: it has past utility patent ,design patent and the patent of invention.