Blinding 100,000 candela peak beam intensity (when powered by included SF18650B battery)
Turbo beam pattern delivers a concentrated, tightly focused beam pattern for PID at extreme distances
Low-Profile Mount (LPM) allows optimum light positioning; ideal for use with other rail-mounted accessories (MIL-STD-1913 & M-LOK cleats included)
Dual Fuel—can run on the included SF18650B rechargeable battery or two 123A lithium primary batteries
The most durable WeaponLight with the most comprehensive remote switching options in the industry
See Farther. The M640DFT-PRO Turbo 
Scout Light Pro combines the best attributes of the standard M640 Scout Light Pro with high-candela performance and dual-fuel capability, and its Turbo Series reflector delivers the farthest-reaching beam and longest