Cracking Up Coco Monkey is so silly, he's downright loco! Coco's monkey-shenanigans will crack you up, as he scoots around and about making monkey sounds! Includes 3 "AA" batteries. He has been adapted to accept a standard 3.5mm switch (sold separately) so people with disabilities can make him move and make silly monkey sounds. Press and release your switch or the button on his hand. This silly monkey is great for teaching cause and effect, enhancing language skills, providing auditory and visual stimulation and encouraging movement. Marvin measures 10" tall and is unbelievably adorable and soft! 3 AA batteries included.