Pressing the red button will play a "ping pong" sound. This is a button-type ping pong buzzer often used in quick-fire quizzes (like the ones you often see on TV). I bought it for my child to play with and for studying for exams (we played quick-fire quizzes as a family), but we hardly used it, so it's in clean condition with little sign of use. There is no box or instruction manual. It runs on AAA batteries. Operation has been confirmed. Due to the size, I will ship it with simple packaging, just putting it in a bag. *Batteries are not included. *Please understand that this is a used item before purchasing. Thank you for looking.