Features: -The power output of the product is the data of the laboratory at a constant temperature and a constant light state. for reference only. The actual output is affected by the brightness, temperature, and equipment load of the sun in the actual environment. - Eco-friendly & durable material. - Applied in charging 18V device as a power bank. - Produce continuous stable output even in cloudy day. -This panel is capable of meeting a wide range of applications where standard panels can be inconvenient to mount, such as on the curved roof of an airstream. Main Parameter: Pmax: 280W. USB Output Voltage: 18V. Material-Panel: PET Laminated Sunpower Mono-crystalline Cells. Size: 790*810MM. Package Include: 1xSolar panel