£High Conversion Efficiency: The 5.5W Portable Solar Panel has 24% High conversion efficiency, high-efficiency output, and excellent low light effect. With a built-in monocrystalline silicon solar module, it can convert solar energy into electricity. So you can use it as a solar charger. £Waterproof and Durable: The mini solar panel is encapsulated with high-quality PET film, which has good waterproof performance and can withstand harsh weather conditions. £Lightweight and Simple to Carry: The 5.5W USB Solar Panel Charger with size 5.23 inches x 2.99 inches perfectly fits in a small bag. You can easy to carry it anywhere. £Broad Usages: Our Portable Solar Phone Charger is great for cell phone charging, home lighting, small USB fan, small night light, and heating tea coaster. £5.5V Solar Panel Charger: These 300mA Phone Solar Chargers are energy-saving, environmentally friendly, and pollution-free. They can convert sunlight into electricity that is rechargeable solar chargers.