This sound book for toddlers is a unique collection of six original nursery rhymes from Cali's Books celebrating mothers. Personalize the experience: the last two pages let children write Mom's name, express their love and make the illustration unique through creativity and coloring. Songs include: Good Morning Mommy, Singing Songs, Mother's Day, A Gift for You, Quality Time, and Goodnight Little One.15 seconds of music on each page Text matching illustration and music Easy to press button even for babies Safe and sturdy, perfect for little hands Montessori-inspired design Inside the book, you will find 1 Sound Button on every page, 15 Seconds of Music, Charming Illustrations, Song Lyrics, and Lots of Fun! It's hardback cover, weight and size are ideal for little hands: 8 x 8 x 1 inches and 1 lb. 🔋 Batteries All books come with batteries included. To replace them, you'll need : CR2032 batteries. Some editions use CR2032 batteries, we recommend to check the battery compartment to determine which battery the book uses.