This solar panel is an energy saving solution for outdoor charging. Compared with power bank that is heavy and whose capacity is limited, this solar panel is so portable that it can be put in notebook as a page. Providing 22-23% ultra high photoelectric conversion rate, it can quickly charge device via USB interface. HIGHLY EFFICIENT: Compared with ordinary monocrystalline silicon solar panel, it provides 22-23% ultra high photoelectric conversion rate. PAGE SIZE: Combining 10W high power with mini size, can be easily put into notebook as a page to carry. NO BATTERY INSIDE: Without build-in batteryno troubles caused by heat or strong sunshine. FROSTED SURFACE: Frosted panel avoids scratches on surface, making the panel more durable. ENERGY SAVING: Taking advantage of sunshine, no capacity limitation that power bank has, an energy saving solution for outdoor charging. PORTABLE: Can be put in bag or hanged up, free to charge via USB interface. Solar panel output: 6.8V 1700mA Power: 10W Photoelectric conversion rate: 22-23% USB output: 5V 1200mA USB version: 2.1 Material: Monocrystalline and plastic Item size: 20.7 x 14.1 x 2.5cm Total weight: 200g Package list: 1 x Solar panel