-The 15W USB foldable solar panel is made of polycrystalline, PET, and Oxford fabric, and it is waterproof to IP65, among other things. It is great for camping, hiking, picnics, caravans, motorhomes, cars, boats, and unexpected power outages in the great outdoors. -USB output of 5V: You can quickly charge your smartphone, laptop, tablet, GPS, USB fan, camera, or other USB devices with one USB output, USB 5V/18VDC. Additionally, your device can be intelligently identified by the integrated smart chip. -Superior conversion: The highly efficient arrangement of solar cells in the foldable solar panel results in a conversion rate of -18-19.5% of the solar energy into electrical energy, and the charging temperature is -20 to 70 degrees Celsius. -Scope of Use: When the battery of the solar panel is placed in the sun, the output box's red LED indicator turns on, and the solar panel begins to function. Please keep the junction box dry because it is not waterproof. -Convenient: Two carabiners, which look like small bags and are very easy to carry, are included with the solar charger.