5mW green laser pointer belongs to Class IIIa laser with 532nm wavelength, uses two AAA batteries. This type of green laser projects 532nm green laser beam with high brightness, so it is extremely dangerous to eyes, especially high powered lasers. In many countries and regions, only allow 5mW green laser pointer.

Early laser pointer only uses 633nm helium-neon (HeNe) gas laser, typically for generating power of not exceeding 1mW laser beam. The cheapest laser pointer uses near 670nm/650nm dark red laser diode. Slightly more expensive laser pointer uses 635nm red laser diode, with near orange red color laser light. 635nm wavelength is much more easily recognized by human eyes. At the same time, there are other colors of laser pointers, the most common is the wavelength of 532nm green laser pointer.

1. What is the difference from red laser and green laser?
Red laser gets wavelength of 635nm and 650nm, and green laser gets wavelength of 515nm, 520nm and 532nm. Different wavelength laser gets different color laser beam and light spot in operation.

In various high tech and entertainment working fields, laser pointers are always widely used in every corner of the world. Someone might use a laser pointer without any problem more than 2 years. However, laser pointer might also burn out after very short term. Besides self problems of laser pointer, it is also very important to make proper operation of this laser gadget.

Astronomy lasers always selects green laser pointer as its light source. 532nm green laser emits the most sensitive green color laser light, thus making the most visible and the brightest green laser beam radiation. This selected astronomy laser pointer is always used for stargazing, constellation observation, and other celestial objects observation.

Available with the finished green laser diode inner structure, 515nm green laser pointer is able to provide a highly stable laser emitting in various presentation fields. Users can have a complete different and wonderful experience with this great created laser pointer.

Laser pointers are usually used as an eye-catching point in education, business presentation, and visual demonstrations.
1. Red laser pointer can be used in almost any indoor or low light situations, pointing out details by hand may be convenient.
2. Green laser pointer can be used for astronomy enthusiasts