high green laser pointer pens, professional lighting lazers Name:Green Laser Pointer Mode :GP-1800A Features:Continuous Wave Battery :1X18650" Dimensionφ ... working time over 5000 hours Output Wave length: 532 nmOutput Power: 350mw,400mw,500mW,600mW(also for clients ) Beam Distance8000- ... including the military, medical and astronomy,indicator, teaching baton Hign power Green laser with key switch