Palm Blaze 3C cells K23C Luxeon K2 6W LED Police Flashlight Baton - 3C Cells, 130 Lumens for 15 hours, Bright and Efficient Energy saving LED technology, around 8 to 10 times more energy efficient than light bulb GREEN Technology - 15 hours battery life at maximum, uses cheap C size cells Luxeon K2 (2nd generation Luxeon LED, 130 Lumens, 130 LEDs equivalent in brightness) Simple new one push to turn off design at any mode. On older designs, you have to cycle thru. all the output modes before you can turn off. High quality solid state DC-DC regulated circuit; Large enough to use as a police baton for personal defense.