The Baby Einstein Ocean Explorers Opus's Spin & Sea Suction Cup Toy engages baby’s senses at home and on the go with lights, rattles, textured arms, and vibrant colors. | Featuring Opus the Octopus from Baby Einstein Ocean Explorers, baby can press Opus to spin his arms and activate light up function. Opus gently rattles when shaken. | Strong suction cup base attaches the toy to virtually any smooth, hard surface, for play at home or on the go. | Promotes cause and effect learning, fine motor skills, and sensory discovery. | Wipes clean. Requires 3 AAA batteries. Dimensions: 6.21 inches x 3.63 inches x 8.22 inches.