Solar Charger - Foldable Outdoor Solar Powered, 28W, Portable, Waterproof Description \nFeatures: \n\n--Built-in Ammeter and Chip: 28W solar charger has a digital ammeter that shows the amount of Amps present and an internal chip that assure stable charge. SunPower Solar Panels with high solar conversion efficiency by up to 21.5% - 23.5% is great for any outdoor activities such as camping, climbing, fishing etc\n--Wide Compatibility: This solar panel attached a micro USB cable for almost all the Android devices and some of the DSLRs. You will need an extra cable for other devices. Under our test with various phones, this solar panel is compatible with all the phone models, including iPhone, Samsung, HTC, Sony, Nexus, HUAWEI, XiaoMi, etc. Ideal for outdoor camping, hiking or exploring\n--Safe Charge: Put your phone inside the pocket with zip closure, keep it safe and clean. Great for outdoor activities such as camping, climbing, fishing etc. Compact size ( 11.2 * 6.3 * 1.1in folded or.