A light-up head, soft rattling base and easy-to-grip design offer excellent benefits for babies and also for kids with special needs. It's an effective way to develop focus while stimulating visual and tactile senses. Red, blue and green lights encourage visual tracking. The NogginStik's soft rattle sound awakens baby's hearing, and the textured handle helps little paws get a grip on tactile motor skills. What a power packed idea, worthy of its many awards! Requires 3 LR44/AG13 button cell batteries, included.