Features: 1.High?efficiency monocrystalline solar panel, with a conversion rate of 23%?24%, reducing mismatch losses. 2.Reliable to use, it can provide stable power output no matter how the sun angle changes. 3.Dual USB port design, used to charge mobile phones, MP3, PAD or other USB charging devices. 4.Waterproof design, withstand all weather conditions, can be used in your car, RV, yacht, or at home. 5.The installation is very simple, and the compact design is convenient to carry around. Specification: Item Type: Solar Panel Material: ABS Waterproof Rating: IP65 Conversion Rate: 23-24% Number of USB Ports: Double Output Voltage: 5V-2A/18V-2.21A PackageList: 1 x Solar Panel1 x Car Charger Cable1 x Battery Clip4 x Suction Cup1 x Manual Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. 1. the use of the product is affected by light intensity and angle, and its best performance can only be achieved under strong light and direct sunlight conditions. 2. the best angle is 90 degrees between the surface of the solar panel and the light. 3. low light intensity, poor angle of solar panel, under the shadow of dark clouds, in the shade of trees, under insulated glass and other environments will affect its energy efficiency.