The "High Power 15 W CREE LED" in the LED Searchlight flashlight emits a broad, strong beam of light that can travel up to 1000 metres (under test conditions). SEALED MAINTENANCE of high performance FREE elements Battery. A searchlight, commonly referred to as a spotlight, is a device that uses a carbon arc lamp as the source of illumination to produce a powerful beam of light with roughly parallel rays in one direction (traditionally). Usually, it is constructed with the capacity to swivel.