Nekteck 21W Solar Charger with 2-Port USB Charger Build with High efficiency Solar Panel Cell for iPhone 6s / 6 / Plus, SE, iPad, Galaxy S6/S7/ Edge/ Plus, Nexus 5X/6P, any USB devices, and more High Efficiency: Constructed with 21 watts High efficiency Sunpower panel, the power conversion rate increases up to 21%-24%, providing enough power to charge 2 devices at same time. Fast charging Technology: With built-in smart IC chip, each port intelligently identifies your device and seeks to maximize its charging speed (up to 2.0A max per port or 3.0 A max overall) Highly Portable: Ultra lightweight (18 oz) and ultra compact (6.3x 11.1x 1.06in folded or 26.3x 11.1in opened). Perfect charging pack to bring for quick charge anywhere there is Sun. Highly Durable: The canvas is created to withstand rugged durability for outdoor use. Exposure to damp conditions will not damage the exterior part of the solar charger. Package Content: Nekteck 21W Solar Charging Panel, 80cm Micro USB Cable, User Manual, 12 Month Worry-free Warranty