Nitecore EX11.2 Smart PD LED Flashlight EX11-2 is a high-durability, high-powered flashlight by Nitecore that uses advanced flashlight technology to create an effective light for all sorts of tactical and everyday uses. The centerpiece of this Nitecore flashlight is its innovative "Smart PD" system, which uses a microprocessor-controlled alloy piston drive to activate the light, which is far more resistant to impact and overuse failures than a standard flashlight, allowing you to use the EX11.2 in the most demanding of environments. Nitecore has equipped the flashlight with an "Infinitely Variable" digitally controlled brightness system that allows you to set the flashlight's output anywhere from five lumens to 200 lumens; you can also quickly switch between the highest and lowest modes. In addition, the Nite Core EX11.2 Infinitely Variable Brightness Flash Light has Strobe and SOS functionality, all powered by a high-intensity CREE XP-G R5 LED bulb. Designed for EDC (every day carry) but equipped for rigorous tactical environments, the flashlight is built of aircraft-grade aluminum, is hard anodized and lightweight, and meets IPX-8 waterproof requirements. For a compact, efficient, and infinitely versatile flashlight, choose the Nite-Core EX11.2 200 Lumen LED Light.