The 30 Day Emergency Lantern lasts as long as the name suggests

 - Aug 2, 2013
References: brookstone & thecoolgadgets
Going camping and having the batteries die in a flashlight or lantern can quickly leave you in the dark, but with the 30 Day Emergency Lantern that's a situation that will never have to be faced again. On the lowest setting, the 30 Day Emergency Lantern can operate for a whopping 30 days while the medium setting will last for a combined three and a half days or a continuous 32 hours when on the highest illumination level.

Essential for camping, in the car or even for use at home, the 30 Day Emergency Lantern is a great piece of equipment to keep on hand that won't fail when it's needed most. The bright LED bulb within the 30 Day Emergency Lantern makes it suitable for both indoor and outdoor use.