Well I just purchased a Dragon Laser the Vipir 125mw one. I currently have a ebay 50 mw laser that wont burn anything. The 50 mw laser has trouble staying bright. It runs out of batteries fast (well the beam dims after a while). What do you guys recommend for the Vipir 125mw. The best longest lasting batteries that i could probably find at walmart (they can be rechargeable). Also does the vipir have like a dimmer? What i mean by that is my 50 mw will shine really bright when i first press the button and then it dims and stays that brightness until let go of the button and press it again. Thank you.