This ruggedly designed compact flashlight is equipped with amazing capabilities sure to satisfy the survival instinct in every outdoorsman. Constructed of aluminum alloy, the F1657 and F1658 are weather resistant and shock proof. It is equipped with the innovative Q3 Cree LED providing a breakthrough in light output and efficacy. Designed with a telescoping focusing system, simply extend the adjustable telescoping located on the head of the flashlight to focus your beam of light creating high penetrability to dense fog, smoke, and dark environments in an instant. With a simple push of the tail-switch this tactical flashlight is capable of shining a beam of light up to 400 meters.