Cheap and interesting laser pointer

Now for cheap high powered laser pointers! First of all, lasers are classified as 5mW laser frame laser pointers, but I know from some reviews that they are often over-spec. I first tested the red laser, and to my surprise it was only a little cheaper and brighter than my 1-5mW. I thought to myself: "I want to use it as a daily pointer." Then I fired a purple laser, which was only slightly brighter than red. I also find it very interesting. Finally, I lighted up my green pointer, which was a ton brighter than the other two (as expected). Decided to wait until the evening to see how the beam is and don't use it too much around the house (there is no reason to wear laser safety glasses yet). Even at very low power, the green laser pointer and the green laser are more visible than the red laser pointer. This is because an ordinary green laser pointer emits a monochromatic 532nm beam very close to 550nm, which is the most sensitive wavelength of the human eye. In short, green light is easier to see than red light.