Oh dear lord ... the reviews. Some people shouldn't be allowed out.
Strong purple beam, really hurt my eye and a mark stayed there for 5 hours when I accidentally stared directly into it haha. My cat almost doesn't pay attention to the dot and instead bats at the beam in the air because of how bright it is.
The power output WILL vary! I still have a few of these I got when I was told these were "ok" a bit back! When I LPM them they are all across the board! Mode hopping doesn't help the reading either.
Much like any hobby or project.. "Do it once and do it right"!!
GLASSES. whats the fun in watching lasers if you cant see 'em!!!!!