100mW 405nm Open-Back Violet Purple Blue Laser Pointer Pen

Product Discription:

Well tested and high quality laser pointer
Easily to use, only need to push the button then you can see striking purple blue beam shoot forth
The light can point at any targets, such as photos, blackboard, video monitors and so on
The blue laser pointer is the best choice for teachers, professors, doctors and so on
This blue laser pointer is clearly visible in the dark
Momentary push button switch with LED indicator
Works with 2 AAA battery (included)
Output Type: Fixed focus, continuous output and working time is long than ordinary laser pen
Wavelength: 405m
Output Power: 100mW  
Working Voltage: DC=3V
Trigger Voltage: DC=2.8V
Working Temperature: 0-40