Item Name: Travel Portable Phone Charger Folding Power Charger 70W Solar Panel USB. Description Material: monocrystal+PET+fabricImp: 2AWaterproof: IP65Color: BlackCharging Temperature:-20-70Conversion rate: 23-24%Foldable Size: Approx.170x115x20mmOutput: USB 5V (built-in voltage regulator)Power Max: 70WExpanding 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