HIGH ENERGY CONVERSION: SunPower highly efficient solar cells convert up to 22%; works even under low light level as 40000 Lux USB OUTPUT: 5V/1A output, up to 6W under direct sunlight; smart IC automatically detects and adapts to your USB powered devices, compatible with iOS and Android TIR-C TECHNOLOGY: smart IC resets the charger automatically to keep the device charged with the maximum output; eliminating the hassle of repetitive plug and unplug FOLDABLE DESIGN: comes with a compact case for your smartphone; can be folded like a wallet for easy transport, great for camping, hiking and other outdoor activities KEEP YOUR DEVICE SECURE: buckle straps to keep your phone or power bank in the case, avoid accidental dropping or other damages