Ultra lightweight and portable, weather-resistant solar panel enables you to charge handheld USB/12V gear directly from the sun. Use a Goal Zero portable power pack and store power for your gear day or night. The Nomad 7 will directly charge most USB and 12V devices (not tablets). Most handheld USB devices including smart phone, GPS, MP3 player. The Nomad 7 is chainable, so you can link several together for maximum charging speed.