•Help eliminate scorching heat build-up. •Powered by solar energy, no consumption of car battery, and pollution free. •Equipped with crystalline solar panel that provides powerful solar output current of more than 1000 ma; creates enough torque to ensure high air ventilating capability. •Simple diy installation, and could fit into most vehicle with sliding window glass of curved or straight top. Good for cars either with clear, dark windows or window attached with sun-film. •No drilling, no nailing and safe. •Design to prevent water penetration during car washing. •Security sealing belt and vacuum suction cap for safety installation. •Equipped with movable remote array that could best access sunlight into the solar cells, ensuring an effective solar application. 5pc/10pc/ maximum 40pc/ cartoon