In order to get the most stable dot generation on multiple raw material surfaces, without any appearance of laser light decay or blur in continuous work, it is the easiest work for users to select Berlinlasers blue laser diode module. It is emitting highly intense blue laser light from high power 445nm blue laser diode. Within 50mW to 100mW, and inner metal heat sink cooling system, this metal housing made blue dot laser makes sure of excellent thermal emitting and highly stable blue reference dot projection in use. This blue laser diode module is keeping work with direct laser light emission from 445nm blue laser diode directly. It is emitting less brightness laser light from 473nm blue DPSS laser, however, this compact structure made laser dot alignment tool is able to work with highly stable performance in continuous work. After quite easy connect with an external DC input power supply, a correct power made blue dot laser gets the best dot positioning results for laser show, laser displaying, military targeting and formal industrial dot aligning works etc. http://www.berlinlasers.com/445nm-blue-laser-diode-module