Sorry for not introduced myself but thank you for answered me, i'm not good in English so is hard for me to write. I will update my profile. I will use the laser for burn small objects 100 mw are enough? If I use magnifying lens whit the laser it can burn better?
Thank you. I know about the glasses
What about this one https://laserpointerstore.com/laser-pointers/by-colors/green-lasers/301-prome-series-laser-pointer
Someone can confirm me that actually do 80mW