The NO! Button was invented by two very tired parents, but the NO button can be used EVERYWHERE. It can be used at home, school, work, shopping and more. Can I borrow some money? NO! Can I have a Puppy? NO! Does this make me look fat? NO! Can my mother move in? NO! Are we there, yet? NO! Great gift for all ages! 2 AAA batteries are included and measures approximately 3.5″ in Diameter.