If you are looking at an inexpensive and compact light that does the job, then check out this Fenix E12. The advanced LED technology housed snug inside the reflector is capable of generating 130 lumens of output on just one AA battery. Get the most bang for your buck with light as it also features two additional brightness modes for multiple applications. Now you can keep a sturdy and compact light in your pocket without having to shrink your wallet to make room. VersatileMultiple ModesNow you can shine up to 130 lumens for an hour and a half! The advanced LED which boosts light at the speed of, well, the speed of light requires only minimal battery power to run as opposed to incandescent bulbs which sluggishly drain battery voltage. Choose between the 130 lumen High mode, the 50 lumen Low mode for situations that require less light, or 8 lumen Low mode for dim lighting applications like reading or ambient tent light. Superior DesignPocket SizedPush the tactical tail switch for fast activation or compatibility with a pistol. This switch is slightly recessed to prevent accidental activation, saving your batteries from unintended usage. The small and sleek shape of the E12 makes it perfect for storing in either your pocket, backpack, car, or luggage. The knurled pattern provides a secure grip so you can whip this light out in a jiffy without it slipping out of your fingers. Powering this light is easy as it uses a simple AA battery, unlike strange and hard-to-find batteries from the manufacturer.Features: Tail cap switch for activation and mode selection Intelligent memory circuit Three brightness modes Anodized aluminum construction IPX-8 Water resistance (Waterproof to 2 meters) Included accessories: lanyard, spare O-ring, instruction manual Specifications: LED: CREE XP-E2 Runs on 1 x AA battery (included) Output mode/Run time: High: 130 lumens / 1.5 hrs Medium: 50 lumens / 6.5 hrs Low: 8 lumens / 40 hrs Dimensions: Length: 3.5" (89mm) Diameter: 0.75" (19mm) Weight: 1oz (28.5g)