Revolutionary focus-control LED illumination lets you change from a flood to a 4x spot. This tri-light LED headlamp has a 0.5W Nichia white LED that offers up to 26 lumens, a red LED for night vision, and a green LED for reading maps or signaling others. The red LED can also signal the international SOS flashing frequency. Separated operation buttons make it easy to switch between white LED and color LEDs. This water-resistant headlamp operates on two 1.5V AAA alkaline batteries. Weighs 2.40 oz. with battery. Measures 2.6" x 1.6" x 1.8".