From baby steps to big steps, the Sit-to-Stand Learning Walker by VTech helps your baby develop from a crawler to a walker through adaptive technology. With a barnyard of playful friends to cheer them on, your little one will have endless fun as they learn to walk and learn first words. Start out with the easy-to-remove activity panel for floor play or on-the-run fun, then step it up with the fun-to-maneuver walker and baby standing activity center. Spinning gears, five piano keys, three colorful rollers, three light-up shape sorters, three light-up buttons and a telephone handset offer endless fun that will stimulate your baby's learning and strengthen little hands and fingers. The baby activity center keeps baby on track by teaching shapes, colors, animals, music and more! Requires 2 AA batteries (included, but new batteries recommended for regular use). Intended for babies and toddlers from 9 months to 3 years old.