The new TerraLUX LightStar with it's state of the art Cree XR-E LED is sure to please. Running for about 1 hour on 2 economical AA batteries the LightStar3 is a model of efficiency. Electronically DC-DC regulated for constant light output Consumes only 3W yet outputs up to 180 lumens! Powered by 2AA alkaline batteries (included) Includes nylon holster, belt clip and wrist strap/lanyard. Tactical Forward Click Switch tailcap switch - press halfway for momentary/signalling, press fully to lock on. Runtime of about 1 hour on 2 AA Alkaline cells (included). Water resistant. Aircraft Grade Anodized Aluminum