These are much better lasers than I thought they were gonna be. First off, these are much stronger than your average cat toy or presentation laser. Don’t recommend using it for that. These are more suitable for light shows with the included filters or just shining on the ground in your backyard to see how bright it is.Do NOT shine these in the sky. I cannot repeat the importance of that. They are powerful enough to cause damage to people’s eyes or cause temporary blindness and Im just gonna leave it at that. Don’t get yourself in trouble.All that being said, these are not the uber powerful 2 watt (2000mW) burning lasers that can burn paper and pop balloons and all that fun stuff. I do have one of those and those you absolutely must wear glasses with. The beam on my 2w blue laser is much thicker than this one. I’ve included a picture to show the difference.These are still less than 5mW but probably right there at the limit at like 4.9mW.These can be of fun if you do it right. Definitely don’t let kids hold them.Also the light itself is not heavy duty aluminum like more expensive quality lights are but it’s not bad. You also can’t unscrew and replace the battery like an 18650 or something. These are sealed and probably have a 16350 or something like that inside. You can charge with usb C.