Using a SSC P4 bin Led,no need for a fragile incandescenb bulb Maximum brightness:60 Lumens One 1.5V AAA(Alkaine,Ni-MH,Lithium) battery ,inexpensive amd widely available 1.6-hour working time(1hour peak brightness) 70MM(L)* 14MM(D) Constructed of aircraft grade aluminum Type III hard anodized finish,highly durable Waterproof Toughened ultra glass lens with AR coating Twist switch Capable of standing up firmly on a flat surface to serve as a candle