The E2L AA Outdoorsman is a dual-output, extended-runtime flashlight featuring a virtually indestructible power-regulated LED emitter and a precision Total Internal Reflection (TIR) lens. This versatile flashlight runs on either AA lithium or AA alkaline batteries, offering users a choice in the field. The E2L AA"s pushbutton tailcap switch lets you activate the flashlight and select an output level: press or click once for a useful, ultra-long-runtime 3-lumen beam; release or click off, and press or click on again-within two seconds-for a near-flawless 80-lumen high beam. An excellent choice for outdoor activities, emergency preparedness, or everyday-carry needs, especially when access to 123A lithium batteries may be limited.