kz-1w041.LED:1WcreeLEDwithalifespanof100.000hours 2.Maxoutput:100Lumens 3.Runtime:3.5hours 4.Battery:3xAAAbatteries 5.Circuilt:Dc-DcBroad-rangeConstantcurrent 6.Material:AircraftAluminiumAlloy 7.Finish:anodized,shoch-proof,water-resistant 8.MaximumSize:140mmx35mm 9.Weight:70g