Using this Emperor LED head set is easy. First, take out the replacement head and the eye parts from the package. The magnetically - activated red LED eye part can be attached easily with the included magnet. Place the replacement head where it's needed and position the eye parts as you like. When it comes to maintenance, keep the set in a dry place. Avoid exposing it to excessive moisture or direct sunlight. If the LED isn't working, check if the magnet is properly attached. That's all you need to know to get the most out of your Emperor LED head set.