Small and lightweight design, you can put it in your bag when outdoors or by a rope around your neck, very portable and practical, you can use it anywhere you want. Unique lamp design on pen can be used for lighting lamps, The pen works like every other pen, except it has an additional pocket on the cover, in which small post-its are stored. When you write something down and have to use a post-it, just open the pocket and grab a post-it.