this flashlight will produce 120lumen with its standard bulb . but you can buy a bulb , model number wa01160 from walamp dot com , and turn it into 500 + lumen . the bulb be only 3 dollar each . I do this and basically that be a 45watt typical bulb 's output , and here I be carry it around in my hand .  the finish of this flashlight be hard anodization milspec type iii , can not even scratch it with my key . so , that will last for a while .  the battery will be good for 1000 charge . cool thing be the charger can be use in you car . you can always have this flashlight with you .