The life of the laser pointer?

It can be seen that the range of the crow drive laser pointer is often from 405 nanometers (purple) to 650 nanometers (red). Most familiar handheld lasers are in this visible light range. The brightest color of the human eye is 532nm green light. Therefore, the green laser beam with the same output will be 5 to 7 times brighter than other high powered laser colors. Therefore, the 200mW green 532nm laser pointer is 7 times brighter than the 200mW 405nm violet laser, and about 5 times brighter than the red or blue laser. What is your main focus on astronomy? The laser pointer is an essential tool for all astronomy courses, such as astronomical observation and constellation display. Cheap laser pointers for less than $40 may not have reliable quality, are not expected to have a long life, and may burn out if they are less than a week of life. Wouldn't it be a bad thing to have such a cheap laser pointer with Sölch? If you want to get a 10mw high-power green laser pointer, you'd better choose a store with a high reputation and a long history, which can always provide you with a real green laser pointer with a service life of about 5000-8000 hours. Buy a cheap 50mw high-quality green laser pointer.