The SureFire M640DFT Scout Light Pro redefines long-gun WeaponLight versatility, merging high-candela performance with dual-fuel capability. Combining the best elements of the M640 Scout Light Pro, this light stands out with its unparalleled beam reach and extended runtime, making it an essential tool for long-range target identification. The M640DFT emits an intense beam with a peak intensity of 100,000 candela using the included SF18650B rechargeable lithium-ion battery, and 90,000 candela with two 123A primary batteries. This dual-power feature ensures that you have the flexibility and power needed for diverse situations. It excels in providing ample spill light for enhanced situational awareness without compromising its long-distance capabilities. The innovative Scout Light Pro Low-Profile Mount (LPM) offers unmatched versatility, enabling users to optimize the light's position relative to the rail and other firearm accessories. Rugged and reliable, the LPM securely fits any MIL-STD-1913 or M-LOK rail. Constructed from lightweight aerospace aluminum, finished with Mil-Spec hard anodizing, and sealed with O-rings to keep out the elements, the M640DFT Scout Light Pro is the pinnacle of performance and features in its class. Prepare to advance with confidence into any situation, knowing the SureFire M640DFT Scout Light Pro is designed to deliver unmatched reliability and power when you need it most.