Make a funny impression at a gathering when you put on a Joy Buzzer. It s a mechanical device with a loop that fits around your finger. Just wind up the handshake buzzer and when you touch hands with someone the device goes off. While it gets described as a shock the sensation is really just a vibration that comes from a spinning mechanism in the buzzer. If you put it on over your middle finger the device remains concealed so you can surprise someone with it. This buzzer is simple to wind up and it stays primed until you press the button on the front. Joy Buzzer: