15mw laser is a kind of low power laser pointer pen,which is also the best presentation pointer. It is widely used in classroom teaching ,product demonstration ,conference explanation ,museum explanation and so on .In addition, small pen style is very convenient for you to take no matter where you go. In particular,laser harmful to the human eye, please do not direct to the human eye, please keep away from children, so as to avoid accidental injury accident . If you want to get the reasonable price and high quality of 15mw laser pointer,welcome to everyonetobuy.com