Are you looking for laser pointer? Here, the answer is for you! With the development of material science and technology, the performance of laser pointers is continuously being improved. We are excited to recommend you this 5mW 405nm Halfsteel Mid-Open Violet Purple Blue Laser Pointer Pen (2 x AAA Batteries).This Violet Purple blue laser pointer is easy to use, and the working time is longer than ordinary blue laser pen, This Violet Purple Blue Laser Pointer Pen is brand new, the light beam can point at any targets, such as photos, blackboard, video monitors and so on. This laser must be the best choice for teachers, professors, doctors, and so on. The output of this flashlight can get 5mw.The blue laser pointer can give out 405nm constant wave. This powerful functional blue laser pointer is most frequently used and necessary in many situations. With this Violet Purple blue laser pointer, you can point the position of objects from long distance accurately.