GO GREENUse sunlight to quickly recharge your USB devices with the the waterproof, 28-watt Goal Zero Nomad 28 Plus solar panel. This light and smart design offers a modular kickstand and power-flow indicator. FEATURESSmart charging features a dynamic auto-restart and intelligent electronics that optimize output, even in cloudy conditionsEasy-to-read LED indicator displays strength of solar conditions, offering immediate feedback on panel-to-sun placement to improve your solar charging experienceRemovable kickstand allows optimum angle placement toward the sunAuto restart identifies a fully charged device vs. one that's disconnected due to lack of sunlight; when the latter is detected, it automatically reconnects the deviceChainable design lets you connect up to 4 panels to collect more solar power and charge devices fasterCharges most USB and 12V devices including tablets, smartphones, GPS and headlampsAlso charges Goal Zero Switch 10, Flip 10/20/30, Venture 30, Sherpa 50 and Yeti 400 (all sold separately)