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The suckerfish accomplishes long trip by attaching to the bottom of a shark, turtle or ship through its sucker on head. This type of flashlight is designed just as the suckerfish, which can be attached to the top or the side of a car. It collects wind energy while the car runs in a high speed, and converts it into electric energy. The flashlight can be taken off for light when we reach the target, which is environmental friendly and saving.