The DFT stands for dual fuel tactical" and represents the natural evolution of SureFire's best-selling Fury® Tactical flashlight into a single-output 1"500 lumen light that can also function as a searchlight. The dual fuel feature means the light can be powered by either two 123A lithium batteries or a single economical 18650 micro USB lithium ion rechargeable battery. Press or click its tail cap switch for ergonomic" foolproof activation under even the most stressful conditions. Its precision micro-textured reflector shapes a smooth useful beam that is far-reaching" with a bright central area that is also optimized for situational awareness. The high-strength aerospace aluminum body and tail cap are knurled for a secure grip and Mil-Spec hard anodized for extreme resistance to abrasion and corrosion.