The human eye can see green color from a greater distance than any other color in the visible light spectrum. Green laser pointers have a visible range up to a mile, even in the dark or low light conditions.  Therefore red laser pointers have a visible range of up to 1,500 feet. Even though both the red and green laser pointers have a maximum output of either 1 mW or 5 mW the green laser pointers can be seen farther than red laser pointers when using it indoors or outdoors.