ASP Tungsten USB Tactical LED Flashlight. The reduced factor of these ASP flashlights are made possible by a revolutionary new light engine. ASP research developed a unique technology which produces an incredible beam of brilliant white pre-focused light. A constant current driver is combined with a mathematically precise collimating cone to achieve unparalleled output. Advanced optics are coupled with a precision machined high strength aerospace aluminum housing. All surfaces are then anodized with a proprietary satin black hardcoat finish. A center locking position guards against accidental activation of the Tungsten LED flashlight. Turned to the right the switch provides constant illumination. To the left activation is intermittent. A removable clasp allows the Tungsten to be carried in a belt case or clipped to a pocket. Specifications for ASP Tungsten LED Tactical Flashlight: Manufacturer: ASP Flashlight Application: Tactical Color: Black Light Output: 15 - 430 lumens Battery Life: 3 hours Bulb Type: LED Beam Distance: 126 m Diameter: 0.9 in Length: 5.75 in Weight: 4.2 oz Additional Features: Standard Battery Type: CR123A Included Accessories: Retractable charging cord Zippered ballistic travel case Adjustable/removable pocket clip Battery storage case Car adaptor Wall adaptor 1 x 18650 Rechargeable Battery Features of ASP Tungsten Tactical Flashlights : Cree high intensity LED Matte black hardcoat anodizing Fine line knurling Three position switch Package Contents: ASP Tungsten LED Tactical Flashlight ASP 35710: Tungsten USB Tactical LED Flashlight