1PC 5V 650nm 5mW Adjustable Laser Dot Diode Module Red Sight Copper Head Mini Laser Pointer

Description 5V laser head laser diode semiconductor laser dot copper tube outer diameter 6MM  1: Pay attention to the safety of the laser cell, to prevent others from demolition burning electric power pool cause a short circuit or battery explosion. 2: The principle of laser emission and particularity generation process determines the laser light with a general do not have the characteristics: namely Miyoshi (the color is good, good coherence, direction) a high (high brightness). 3: Mainly used in laser toys, all kinds of level meter, instrument, such as ground Making electronic pointer pen: When the teacher lectures, students with a laser projection point drew concept investigation thinking. Wiring: Black is negative positive red Wavelength: 650NM Power: 5MW outside diameter: 6MM