You show 3 LED bulbs that have 2 metal prongs which allow you to attach the Led to a flat watch type battery one led glows red and the other two glow green. You mix the led lights on a table and all the spectator has to do is find the Red LED.//No matter how slowly you mix the Led's the spectator is never right, you win every time. That is the basic routine. Another routine you can do is Mentalism Monte. You have 5 volunteers. You write on a piece of paper before they even select their led's the name of the spectator who will get the red light. Once again you are always right.