BlitzWolf 20W/3A Solar Charger Portable Dual USB Port SunPower Battery Charger for All Cellphone iPhone X 8 7 6 6s Plus, Samsung Galaxy S8 S7 S6 Note 4 5, Sony Xperia (Over 21% SunPower Conversion) [Highest Ever Sunpower Conversion] Compare to 15% or less conversion rate of some other solar chargers, this solar panel is 21.5%-23.5% efficiency, the highest ever you can see! [Dual USB Powerports] 3A/20W for dual ports, intelligently detect your devices and deliver the highest possible with Power3S Tech, no worry about overcharging and overloading. [Automatic Restart] Don't worry whether the panel is out of solar power, the charger panel will automatically restart charging when it is illuminated again. [Charges All Phone Models] Under our test with various phones, this solar panel is capable of charging all the phone models, including iPhone, Samsung, HTC, Sony, Nexus, HUAWEI, XiaoMi, etc. Ideal for outdoor camping, hiking or exploring. [Lifetime Quality Care] BlitzWolf awards 18 months warranty and lifetime warmhearted consultancy to assure your long term enjoyment.