Our solar powered auto fan easily attaches to the top of a roll-up window to keep your car cool while you're away. 1. Cool down, effectively reduce the temperature inside the car. 2. Detoxification: If the temperature is too high, it will release 20 times more toluene (the toxicity of toluene can cause miscarriage in pregnant women and blood cancer in children) 3. Deodorization: Discharge the odor in the car and keep the air in the car fresh. 4. Heat dissipation: There is no sultry feeling when entering the car for the first time. 5. Health: Air convection is beneficial for you and your family to enjoy a non-toxic and harmless riding environment. 6. Protection of electrical appliances: The electrical and electronic equipment in the car will affect its performance and service life due to high temperature. 7. Energy saving: When the temperature inside the car is not high, the air conditioning effect will be effective after each driving, cooling the vehicle and saving fuel. Using monocrystalline silicon solar panels, no batteries required. This automatic cooler fan uses sunlight from solar panels to run the fan.Ventilation keeps the air in the car clean, detoxifies, prolongs the service life of electrical components inside the car, and saves energy. Material: ABS Colour: Black Dimensions: 150 x 60 x 110mm Weight: 270 grams Package Included: 1 x sun window fan 1 x Strip Notice: Car cooling doesn't work on cars with tinted windows