Item Name: Travel Camping Phone Charger Folding USB 70W Power Charger Solar Panel. Power Max: 70WImp: 2AConversion rate: 23-24%Color: BlackOutput: USB 5V (built-in voltage regulator)Waterproof: IP65Foldable Size: Approx.170x115x20mmMaterial: monocrystal+PET+fabricCharging Temperature:-20-70Expanding Size: Approx.650x170x3mmFeatures:1. Solar energy and efficient solar charger circuit. Environmental protection and energy inexhaustible.2. With waterproof surface. With LED charging light.3. With class A single crystal silicon, conversion rate is 23-24%.4. Slim & Light design with 3mm thickness.5. Portable and frame design fit for outdoor and indoor