high green laser pointer pens, professional lighting lazers Name:adjustable focus Green Laser Pointer Mode :GP-1800 Control of the smallest ... :10pcs MEAS:21*25*35cm G W:1.5kgTechnical Parameteradjustable focus, green dot facula, continuous output and working time over 5000 ... military, medical and astronomy,indicator, teaching baton Hign power adjustable focus Green laser portable with key switch