Grows with your child by easily transforming from a baby gym with dangling toys to a light-up activity panel and into a walker with speed control Three modes play melodies and sound effects; introduce colors, shapes, letters and numbers or encourage physical movement Interactive features encourage fine motor skills and include five piano keys, a phone, bead spinner, two dangling toys and more Customizable wheels can be set at different speeds to match your child's ability level Color-changing dome lights up in six different colors to enhance the music and learning. Requires 2 AA batteries (batteries included for demo purposes only, new batteries recommended for regular use); intended for ages 3 months to 3 years