Fenix L0D-CE REBEL RB80 LED Flashlight (5 output types) - 60 Lumens on one AAA battery Luxeon Rebel LED (80 lm/w) with lifespan of 50,000 hours Five output modes: 21 Lumens(3.5hrs) -&gt; 7.5 Lumens(8.5hrs) -&gt; 60 Lumens(1hrs) -&gt;Strobe -&gt; SOS Four days of survival use (two continuous hours per day on the lowest setting) Uses one 1.5V AAA battery (not included), inexpensive and widely available 7.35cm (L) x 1.4cm (D) (or 2.9 in (L) x 0.6 in (D))