The ASP Tungsten LED is small, powerful and incredibly bright. It combines a distinctive profile with a no compromise standard of quality. The reduced form factor of the Tungsten LED is 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 aluminium housing. All surfaces are then anodized with a proprietary satin black hardcoat finish. A centre locking position guards against accidental activation of the Tungsten. 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.