... ),Expected Lifetime: > 8000h 5mw YZGLP-6020 Green Laser Pointer Specification :(1) Green laser pointer (2) Wavelength: 532nm (3) Laser range: 300-8000 meters (4) Battery ... Material: Brass FeaturePen style, portableWell tested and high quality green laser pointerClearly visible in the darkFixed focus, continuous output Using long lifetime chip, more ...