For cellphone, camera,power bank,camping lanterns and so on. Ultra-light,compact design: foldable and portable size, 10.6" x 7.1" , only 400g. with convenient eyeholes to attach the backpack while hiking, camping. High quality,tested materials: 1 rugged monocrystalline solar panel. Waterproof IPX5, UV, and scratch-resistant designed for 10 plus years of outdoor use in any condition. 5V Solar Battery Charger: This solar panel converts sunlight into electrical energy as 5 Volt rechargeable battery solar charger. It is energy saving, environmental friendly and pollution-free. Sufficient energy :High conversion rate, high efficiency output, excellent weak light effect. Max.charging current is 3000mA,normal is 1500mA.