B2 NewWish Green Laser Pointer 50mW ON/OFF (532nm)

Green laser pointer with ON/OFF switch (NewWish , Ltd.^®)
Power: 50mW
Wavelength : 532nm (color = green)
Range of the laser beam: 2-3km approx. (in darkness)
It is an ideal laser pointer for night marking, thanks to the fact that it emits a visible laser light beam.
It is especially suitable for use in astronomy, audiovisual shows as well as for a multitude of applications in the area of engineering, optics, physics and construction
The reason why green laser pointers are the most used when high visibility is required; This is because the photoreceptors in the human eye (the cones) are more sensitive to green light than to light of other colors (or wavelengths). Therefore, a beam of light from a green laser can be seen with more intensity or brightness than the equivalent of the same power in other colors, such as red or violet.
It is a laser pointer recommended for the average user, who needs a laser pointer with an ON/OFF switch on the back