The Inova XO™ is the first flashlight to collect, concentrate and deliver +90% of the light generated by LED lamps. This innovation in optical efficiency means a light beam, effective up to 200', that cuts the darkness like no other LED flashlight. Breakthrough optics technology makes it possible to maximize light yield and quality from ever-advancing LED lumen power. In other flashlight brands, optical systems remain the weak link. The Inova XO's complete, muscular chain of superior light generation, light projection, power regulation and lithium battery power changes everything.