Taf Toys Koala musical mobile will entertain, but at the same time calm the baby while walking with a stroller. The mobile can be easily attached to an infant carrier, stroller or crib. Pull the teether and and activate the music and lights. A toy with 3 adorable melodies and light will help baby to fall asleep. Develops the child's cognitive skills, fine motor skills and emotional intelligence. Powered by 2 AAA batteries (not included).