Millions of Pete the Cat fans love this cool, groovin', easy-going, rockin' cat! With 20 best-selling children's books on the market and more releasing each year, happy, fun-loving Pete has become a preschool and kindergarten sensation. Musical, light-up pen guides young learners with lights and sound effects when used with any Hot Dots card or book sets. Pen requires 2 AAA batteries, not included.