Specification:Iteam Type: Car Exhaust FanWeight: Approx. 8g / 11.6ozVoltage: 2VPower: 0.5WProduct Material: ABSSolar Panel: Monocrystalline siliconProduct Size: Approx. 15 x 11 x 6 cm / 5.9 x 4.3 x 2.4 inPackage List1 x Exhaust Fan 1 x Manual1 x Sealing TapeNote:1. This product statement: It is solar energy ventilating, with a power of 0.5 watts. Don't think it's an electric fan. The main function is to ventilate. The car window is installed with antipinching, it may not be closed tightly. Therefore, the buyer who has installed the antipinch hand, bought the car window and said that the car window is not closed tightly, please think of a solution by yourself.2. As long as there is sunlight on it will run fast,10 minutes can take away the harmful gases in the car.