Streamlight's UltraStinger LED is a heavy-duty flashlight that emits a high-power 1,100-lumen beam for full peripheral illumination. It can be adjusted to suit high- and low-light situations, producing three beams, one at 1,100 lumens, one at 350 lumens and one at 90 lumens. The lowest level has a 16-hour runtime but still emits a strong, concentrated beam of light. There is also a strobe setting for signaling and disorientation. C4 LED technology provides maximum illumination for any situation and is shock-resistant as well. This model also features Streamlight's signature Ten-Tap programming, which allows for quick switching between light modes and lets you easily reprogram the light if you aren't happy with the default settings. The aluminum construction is ultra-durable and the polycarbonate lens is both scratch-resistant and unbreakable.