Why ciimB ourinG the oav when it's so much less crowded at niGht? These SureFire eMPloyees tackle SMith Rock's 350-Foot Monkey Face" in central OreGon.

1 highest-quality light sources

Without the light source, a.k.a. the emitter, there is no beam, so cutting corners here undermines the whole purpose of a flashlight. That's why SureFire uses only the highest-quality emitters—be they high-pressure xenon incandescent lamps, light emitting diodes (LEDs), or high intensity discharge (HID) lamps—in each and every illumination tool we produce.

Incandescent Lamps—Proven, High-Output Performance

The small but powerful incandescent lamps used by SureFire aren't your typical off-the-shelf bulbs. They're state-of-the-art devices with advanced features.

Custom tungsten filaments are featured in every SureFire incandescent lamp for maximum light output and to withstand the vibration and g-force of extreme conditions. Each filament is designed around a specific power supply, light output, and runtime for optimal performance.

High-pressure xenon gas is added to enable an increase in operating temperature, which increases light output for a given power consumption rate. It also inhibits tungsten "boil-off," which can form a light-blocking layer of tungsten atoms on the inside wall of the lamp. While other bulbs use argon or krypton— both much less expensive gases—SureFire insists on using xenon-filled lamps for peak performance.

Halogens, in our own proprietary mixture, can be found in some SureFire incandescent lamps. Boiled-off tungsten atoms combine with halogen atoms to form a vapor, which migrates back to the filament, where high temperatures break it down into its original elements. This process continues indefinitely, the bottom line being that it keeps the lamp's inside walls relatively free of tungsten deposits that can block light and reduce output.

LEDs—Durability, Variability, Efficiency & Longevity

Most LEDs can't yet match the light output of the brightest incandescent lamps, although this is changing fast (see Improved LED Performance, p.15). But when it comes to durability, efficiency, the ability to vary outputs, and longevity, LEDs are in a league of their own.

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