green laserhttp://www.everyonetobuy.com/700mw-lasers.html Green pen , by definition, is a " green laser pointer " for short , it can be called " green laser pointer ", " green laser pointer ", " refers to the star pen" , " green laser pointer " and so on . Now green pen is the world's most popular laser pointer , because green light is 6 times of red light beam significantly , while the price is cheaper than a lot of blue and yellow . Users generally will choose green laser pointer pen . The wavelength of light emitted by the green pen is 532nm, the laser type is a Class IIIA, uses two AAA batteries . Brightness green pen is more objective , relatively high risk to eyes, the higher the power , the more dangerous .
