Anker 21W Dual USB Solar Charger, PowerPort Solar for iPhone 7 / 6s / Plus, iPad Pro/Air 2 / Mini, Galaxy S7 / S6 / Edge/Plus, Note 5/4, LG, Nexus, HTC and More The Anker Advantage: Join the 10 million+ powered by our leading technology. Fast Charging Technology: PowerIQ delivers the fastest possible charge up to 2.1 amps under direct sunlight. 15W SunPower solar array is 21.5-23.5% efficient, providing enough power to charge two devices simultaneously. Incredibly Durable: Industrial-strength PET polymer faced solar panels sewn into a rugged polyester canvas offer weather-resistant outdoor durability. Highly Portable: Compact size (11  6.3 in. folded / 18.1  11 in. opened) and elastic loops on each corner allow easy attachment to backpacks, trees or tents. Super lightweight (13.2 oz) and ultra-thin design (0.7 in. folded / 0.2 in. opened) make it ideal for long treks. What You Get: Anker PowerPort Solar (21W 2-Port USB Solar Charger), 3ft Micro USB cable, welcome guide, our fan-favorite 18-month warranty and friendly customer service.