We have made the part for USB power supply without using cigar lighter receptacle. The developing point of this product does not concern of the price, but to supply charge properly. It can be installed in the vehicle stylishly by processing mask switch hole. It is very small and can even be set inside the dashboard for some vehicles; it also can be placed on back seats freely. This product has an echo effect of reducing calorific value by increasing the transformation efficiency via circuit and used element. It is made in consideration of the safety and the best of over-current protection circuit.