20,000mAh Solar Power Bank: High-capacity rechargeable battery provides portable backup power for phones, tablets, earbuds, speakers, and USB-powered devices. 3 Charging Ports: Includes 1 USB-C input/output port and 2 USB-A ports, allowing you to charge up to 3 devices at once while traveling or outdoors. 15W Max Output: Delivers up to 15W max output when a port is used individually; when multiple ports are used at the same time, each port provides 5W output. Emergency Solar Charging: Built-in solar panel helps top up the battery in sunlight, making it useful for camping, travel, power outages, and emergency backup power. IP44 Weather Resistant Design: Rugged portable charger is built for outdoor use with IP44 weather resistance when the silicone port cover is properly closed.