Lamp: Cree 7090CR-E MC-E LEDLamp Life:80,000 hoursLight Output:1000Lumens;Power Source:2-cell 18650(lithium) Battery Runtime:90 minutesInput Voltage:37.4V—8.4VAerospace-grade aluminum beody with anti-scratching type III hard anodizationConstruction:Shockroof and water resistantModes:High/Low/Strobe(can choose 5 Modes)Switch: Tactic Click Reverse Swith Toughened Clear glass LensDimensions: 21.0cm(L)X5.5cm(D)