There are different kinds of Firefly Laser Light. This version has a range of about 6,000 feet and it ideal for pointing out stars and planets in the night sky. Some do not have IR filters and these kinds are not to be bought by U.S. citizens or people living in the United States due to FDA rulings. They do require the use of protective eye-ware. The high-powered 100mW green laser can be used to point out items at a long distance, pop a balloon and even start a match on fire and has been known to cut through black electrical tape. This type of laser is not a toy and should be kept out of the hands of children.
A regular green laser pointer is ideal for use during a presentation for a business meeting or in a classroom. The beam shows up well in a dim or dark room setting. Use it to point out information that appears on a video monitor, blackboard or in showing a detail to your audience in a picture. The laser is a hand held device that has a push button switch and requires batteries for power.
You can purchase High Power Laser Diodes that has interchanging laser dot heads. Other laser pointers may only have one setting while others can be adjusted for dot size. With any size laser, including the 100mW green laser, it is never a good idea to point them at someone's eye, because this can cause serious harm or blindness.
There is a Twinkling Laser Light that can be used in a disco or dance hall. It has several different beams from different apertures that spill over the floor or the stage to light up the show. They can be placed overhead or on the floor, depending on where you want to focus the light.
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