DX has a pretty good 30mW Green Laser Sku # 7883. It is VERY easily 'modded' to put out 50+mW's It has no IR filter, but due to the way it is built, one can be added VERY EASILY. One battery lasts a long time, & since the laser is built of almost ALL brass, the WHOLE laser acts as a heat-sink. I have had mine on for 10+ minutes at a time with NO problems at all It has a clicky on/off switch, & is very ruggedly constructed Hope this helps you make up your mind, I liked the first one so much, I now own three. I over-modded one & blew it out, so now I have a great host for making a nice BR Laser in the gutted remains Good Luck with whichever DX 30mW 'GREENIE' you choose phoenix77/rob