Is it possible? / Stapler

When we use stapler, we often tend to fail. Because paper is too thick compared to size of staples. but we don’t know how much paper is available. Now we propose a new stapler. There is display to side of the stapler . it help you to know it easy. if staples's tray is under the arrow, it is suitable amount papers.Conversely, if it is above the arrows, it is unsuitable cases.
it can help you avoid making mistakes anymore.
Video Link - http://youtu.be/vZC7FiH3A5s