Specifications Material Grade A PolysiliconWorking Current 0 400MAConversion Efficiency 18 8 Output Port USBSize 157 94mmPower 2WVoltage 5VFeatures 1 High Quality Material Made of Grade A Polysilicon providing durability and reliability 2 High Efficiency With an impressive conversion efficiency of 18 8 it ensures maximum power generation from sunlight 3 USB Output Port Comes equipped with a USB output port making it suitable for charging a wide variety of devices 4 Compact Size Its compact dimensions of 157 94mm make it portable and perfect for outdoor use 5 Resilient against Weather The waterproof feature allows it to function optimally in various weather conditions making it ideal for outdoor adventures Package Includes 1x 5V 400mA Solar Panel