Feature: 1. Suitable for car batteries, automobiles, RVs, ships, airplanes, satellites, space stations, outdoor breeding, planting, tourism, solar street lights. 2. High conversion efficiency, good output efficiency, low light efficiency, light weight, strong applicability. 3. Easy to use, you can put the panel in the sun and use it to directly charge the device. 4. Used to charge MP3 mobile phones, mats or other controlled devices. With dual female USB ports, you can easily charge the device through a USB charging cable. 5. Lightweight and portable, easy to carry, suitable for outdoor biking, mountaineering, hiking, camping, traveling, etc. Specification: Item Type: Solar Panel Kit Material: Monocrystalline Silicon Color: As shown in the picture Product Size: Approx. 280x280mm / 11.02x11.02in Controller Size: Approx. 133x68x35mm / 5.24x2.68x1.38in Weight: Approx. 577g / 20.4oz Power: 40W Open Circuit Voltage: 18V Short Circuit Current: 2A Output Voltage: DC 18V&9V, USB 5V Waterproof Rating: IP65 Conversion Rate: 23-24% Controller Parameters: Controller Rated Current: 20A Voltage: 12/24V automatic USB Voltage: 5V 2A Standby Current: <10mA . Package List: 1 x Solar Panel1 x Controller1 x Crocodilian Clip4 x Suction Cup1 x Connection Line2 x Chinese and English Manual Note: 1. Please allow 1‑2in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. Without power storage function.