This fan is powered by the solar panel and would not cost you anything for energy providing. Manufactured with the purpose of durability, this product would spend eminently long period of time with you. Features - Color: Assorted Color. - Material: Monocrystalline silicon. - Size: Approx. 42.00X19.00X0.25cm/16.51X7.47X0.10in. - Maximum Power: 10W. - Open Circuit Voltage: 14V. - Maximum Power Voltage: 12V. - Short Circuit Current: 1.1A. - Maximum Power Current: 0. . - Output: USB 5V, DC5521 12V. - AM: 1.5. - Irradiance: 1000W/square meters. - Temperature: 25 degree centigrade. - Perfect for cooling your pet house in the summer. - Also, can be used as emergency power supply outdoors. - Widely applied in breeding house, livestock farm, pet house, car, and so on. - Portable, small and lightweight, which is easy to carry around. - No batteries needed, silent and green energy, great for environment. Package list: 1 Panel 1 x Fan 1 x Lighter Charger 1 x Battery Clamp 4 x Suction Cups 1 x User Manual