The more your little one talks to the Baby Amaze Learn to Talk and Read Baby Doll by VTech, the more words and phrases the baby doll will learn and repeat Talk to the baby doll and hear her repeat you, or read from the three included vocabulary books featuring more than 70 words about animals, foods and household objects The baby doll also encourages nurturing role play by asking your child for her pacifier, bottle and more; baby doll works with the Baby Amaze 3-in-1 Care and Learn Stroller (sold separately) Press the four buttons on the baby doll and put the bottle or pacifier in her mouth to explore all of the fun interactive activities; newborn button resets the baby doll to start over again Requires 2 AA batteries (batteries included for demo purposes only; new batteries recommended for regular use); intended for ages 2 to 5 years