BaseCamp LED Lanterns utilize state of the art bulb technology and proprietary, advanced reflectors to pierce even the darkest nights. While total rated lumens are important, BaseCamp lanterns deliver "effective light"...defined as the ligh tyou need to perform your task. While you reyes can't measure lumens, they sure can tell you if there is enough light to read in the dark or walk in the woods at night. BaseCamp Lanterns deliver the light you need, with reflectors to put the light right where you need it, while utilizing less battery power than other lanterns on the market today.