AmazoncomCompact and lightweight, the Streamlight PolyTac LED is a lithiumpowered flashlight with a superbright C4 LED that triples the brightness of a regular LED Featuring a tailcap switch for singlehanded operation, and durable and waterproof materials for use in extreme conditions, the PolyTac LED Flashlight is ideal for daily use at home or work and for outdoor activities like camping and huntingPowerful Performance in a Petite PackageWeighing 41 ounces, the Streamlight PolyTac Flashlight is 522 inches long, 1 inch in diameter at the body, 114 inches in diameter at the ends, and fits easily in your pocket, purse, backpack, or tool bag Powered by two CR123A Lithium batteries included, the PolyTac LED produces 130 lumens of light for up to three hours of battery run time with a C4 LED that will last 50,000 hoursThe Advantages of LED LightAn LED is ideal for a light that gets used on a daily basis You don't have to worry about breaking the light, since there is no glass or filament, and you rarely have to replace LEDs because they can last a lifetime Save time and money on batteries as wellthey will last much longer with an LED than with a regular light bulbC4 Technology Provides Bright, Powerful IlluminationWith Streamlight's specially engineered reflector and innovative C4 technology, the PolyTac LED features a brighter, more powerful light than any prior LED on the market C4 Photonic Crystal technology almost triples the brightness and creates an intense beam that pierces darkness Solidstate power regulation also maximizes the light output throughout the life of the batteries, producing a consistent illumination level over timePush Button for Convenient OperationDesigned for convenience and easeofuse, the tailcap push button is quick and simple to use with one hand Depress the push button slightly for a momentary light, or click the button completely for the constanton positionDurably Constructed for Use in Extreme ConditionsMade with highimpact, tough, nylon polymer for exceptional durability and a sure grip, the PolyTac LED is waterproof to 1 meter for 30 minutes and features an Oringsealed borofloat glass lens The PolyTac LED is ideal for use in automotive, hardware, law enforcement, security, sporting, and outdoor applicationsThe Streamlight PolyTac LED Flashlight is backed by a manufacturer's limited What's in the BoxStreamlight PolyTac LED Flashlight and two 3volt CR123A lithiu.