Well what can i say?!?! I LOVE THIS LASER (even though it almost blinded me when i was testing it). i hooked it directly up to 3.0v CR123's after i took the head out of the case and i wanted to see if it was emmiting ir and no green so i made it face white paper, when the circuit linked it was super dam bright and i was like WTF?!?! i tested it some more on futher away stuff and the green beam and dot were even more visible than usual! its not even night and i can see the green solid beam! So what i wanna ask is it safe to use with CR123 3.0v? since it runs on 3.0v cr2's would it hurt if i ran it under 3.0v CR123's??