Features 1The conversion efficiency is high the output efficiency is good the light efficiency is low the weight is light it is convenient to carry and the applicability is strong. 2Used 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. 3Lightweight and portable easy to carry suitable for outdoor biking mountaineering hiking camping traveling etc. 4The solar panel is easy to use you can put the panel in the sun and use it to directly charge the device. 5Suitable for car batteries automobiles RVs ships airplanes satellites space stations outdoor breeding planting tourism solar street lights. Specification Item Type: Solar Panel KitMaterial: Monocrystalline SiliconColor: As shown in the pictureProduct Size: Approx. 280x280mm / 11.02x11.02inController Size: Approx. 133x68x35mm / 5.24x2.68x1.38inWeight: Approx. 577g / 20.4ozPower: 40WShort Circuit Current: 2AWaterproof Rating: IP65Conversion Rate: 23-24%Controller Parameters:Controller Rated Current: 40AStandby 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.