Featuresofthisunitinclude:Wavelength:532mOutputpower:5mW -150mWMomentarypushbuttonswitchwithLEDindicatorSolid,heavydutyconstructionConstantwaveoutput(asopposedtopulseoutput)Takes2 AAA batteries(included)Canbeusedforskypointing,astronomy,projectiononlowclouds,signallingUsageProfessionalPresentationsAstronomerspointingoutconstellationsandstarsinthenightskyBirdwatchingTourGuidesConstructionengineersandworkerspointingoutpointsofinterestonaprojectCampingHiking