The Leapfrog Fridge DJ is truly a multi-sensory learning experience that helps your child discover numbers, letters and more! The learning screen lights up to show uppercase and lowercase letters, helping to develop letter-recognition skills. Rhyming songs introduce numbers 1-20, both up and down. Engaging music encourages children to move and dance along as Fridge DJ spins learning along! Requires 3 "AA" batteries, included. Measures 2"L x 9"W x 6"H.