I have purchased several lasers from amazing, PGLIII 400mw green, 200mw green (c-cell) 150mw green, 300mw red (sent it back square beam) and Kari who will answer the phone in sales is very helpfull, I had trouble with my 400mw green after 5 months of use and they sent me a new 400mw green and this baby pops balloons at 40ft in about 2 seconds, even after 5 minutes of use this 400mw will still pop balloons at 40ft, all I can say is amazing1 has treated me good and their prices are reasonable, from Eddie in Texas. ps, I ran across a video on you tube about the owner (Bob lannini), this man has several inventions and like to blow stuff up, you can check this out on you tube (amazing1) then decide if you want to buy a laser from them.