10mW of 532nm green will have a visible beam in the dark or in very dim light but you may be disappointed with it, if you want a good visible beam you will want more power than that. Yes 10mW is safe without goggles, but not if you take a direct hit in the eye. Anything over 5mW and your blink reflex won't save you, so don't let it reflect off some glass or a mirror and hit you in the eye.Can you give the link of the 10mW one that you have? Is it safe enough to use without goggles, and can you see the beam? Thanks!
My first high quality pen I purchased was Optotronics 75mw green pen and as you have seen he sends a test paper with every laser. It comes in up to 86mw with the IR filter. Just by taking it out of the box you can feel the difference in weight. Jack the owner has amazing customer service and he is the one that replies. Another plus is shipping I got mine in 3 days. This pen is nice and stable. I didnt look at the link but im assuming your looking at 100mw greenie. So far mine is just like the reviews. If you get it enjoyhttp://www.optotronics.com/proddetail.php?prod=Opto100
Does anyone own this particular laser and would you recommend it. The reviews on the site are good but would like an opinion apart from their website.