1.Material:ABS & plastic 2.Battery:3*D 3.Size:180*90mm 4.Bulb;21leds 1.Material:ABS & plastic2.Battery:3*D3.Bulb;21LEDS.4.Runtime:Over 10hours5.Portable for easy carry,long lighting time for camping,trekking,hikeing,emergency6.Package:colour box 21 leds emergency lamp with retractable hook