The product's eligibility uses strobe tube as to give out light source or adoption LED be used as the light source, socket eligibility various colors matches, flashing the frequency is divided into the single a flashlight, flash three times and flash many times, the electric voltage is three kinds of with the 220 V for 12 V,24 V,110v, the light is apart from 3000 rices are above, can for the ships, car, repair road to repair bridge, superhighway, building etc. makes the caution function.