Blue lasers are actually the same type of lasers that are used in Blu-ray technology. Although it is rarely prefered to the green and red ones, it could be used for what others do, which also reflects the individual unique aesthetic taste. As far as presentation pointers go, it can be a nice change of pace to use a blue laser pointer, but much more powerful blue lasers are also available. However it comes down to all other uses such as pinpointing something on the large screen or on the blackboard.
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I purchased this for an extra bright night pointer for astronomy outreach.rnWhen it arrived, the battery which is around 4000-4500 mAh was defective. Oh well, shopping online, I upgraded to a 6000mAh for very little cash. I tested this laser with the fully charged new battery and at 4 inches, it was smoking black electrical tape, but after 15-20 seconds, didn\'t burn through. I next tried a shopping receipt, it started to make a black mark after a bit, no burn through. I tried a match at 2-3 inches but it would not ignite. I think for that you need a 1000mw laser but for what I am doing, it is extremely bright and I am very happy. Good construction, turn the locking key while gently wiggling it.
small green laser, corresponds to expectation, this is really a laser pen for presentations, no issue.
Very good laser the manufacturer has also put the lint-cap for Italy
Shipped very quickly. Seems well-made. Powerful enough (without the starburst lens) to see the beam touch the clouds. As others have said, battery goes in backwards: Negative end toward LED. VERY apprehensive about disturbing warning not to use continuously for more than 15 seconds. That seems like an unreasonably short period of time and accounts for my reluctance to award five stars. If I have it for a year, and the LED doesn't burn out, I'll say that I would certainly recommend it to a friend.
Much better than I expected.This laser pointer is what I was looking for.The bright and tight focused beam light can go very far.It helps me a lot in my daily job.
Blue Laser Pointers
Green Laser Pointers
Green laser pointers are now the world's most popular laser pointers, because the green light than red light 6 times more than red light beam significantly, while the price is much cheaper than the blue and yellow, green laser pointer is simply more powerful than red laser pen. Of course, this also means that green lasers are potentially more dangerous than red lasers. When operating this type of laser, it is important not to point it into anyone's eyes or to point it up in the sky towards any airplanes. It is probably not as much preferred lasers as an astronomy laser pointer, because brighter colors would make an object more visible in the sky.
Red Laser Pointers
Red laser pointers are by far the most popular and least expensive type of laser pointer. This is because the wavelength of the red color can be manufactured more easily than that of the other colors in the spectrum, red laser is also the only color that is available in the smallest size of laser pointers. Do remember that red laser light is powerful when it hits a certain object and converges into a point.
HTPOW Lasers are IR filtered for safety and the output power is measured on each unit individually for a 20-minute continuous period to ensure sustained performance. This high power laser test is done at least 3 times before the laser is shipped to the customer. All lasers are the best quality, the most competitive price. We guarantee all laser pointers products are free shipping, 30-days return policy, 1-year warranty period.
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