The Gerber Recon is a lot of light in a small package. The Recon has Gerber's D.I.A.L.(Diode Illumination Adjustable Lens) that is a great feature, allowing four different different colors from one white LED without having to change outany lens. White light for general use, blue for fluid identification, red for night vision and green for map reading. All this powered by one AA battery, included.