It is water resistant and is adjustable from 25 to 400 lumens. You will get 100 hours of light in one full charge from the 4000 mAh lithium-ion battery (holds a charge for 7 years). It has a USB port for charging your mobile devices. It also has a micro USB for rapid charging the lantern or you can use any light source to keep it charged with the built in solar panel. It is 7.5″ tall and weights 12 oz.