Hammacher Schlemmer The 30 Day Lantern.
This is the lantern that provides up to 30 days of reliable light on one set of batteries. The lanterns three 1.4-watt LEDs use a fraction of the energy of traditional bulbs to produce 720 consecutive hours of light on its lowest setting us...ing only three D batteries (not included). The lantern generates up to 300 lumens of bright, white light that can be seen from up to 75 1/2 away. Made from impact-resistant ABS with rubberized encasements, the lantern is shock- and water-resistant. The device has a green LED that flashes when the device is off for easy location in blackouts and a built-in hook allows the lantern to be hung upside down. With three light output levels and a flashing mode (provides 32 hours of light on high). 7 1/4" H x 4 1/3" Diam. (1 3/4 lbs.) Read More