The LeapFrog Leap Start Interactive Book "The Birthday Surprise" cartridge is designed for preschool-aged children up to age 5. It features interactive activities that focus on pre-reading skills, making it ideal for children aged 1-4 years. The book is part of the Leap Start platform and includes content centered around animals, engaging both boys and girls in educational play. Manufactured in China in 2001, this LeapFrog product offers a fun and educational experience for young children as they explore the subject of "The Birthday Surprise."