Goal zero nomad 7 solar panel ultra lightweight and portable weather resistant solar panel enables you to charge handheld usb12v gear directly from the sun use a goal zero portable power pack and store power for your gear day or night features solar capacity 7w power output usb 12v ideal for guide 10 switch 8 smartphone gps headlamp weight 363g chainable yes cell type monocrystalline specifications charges the following goal zero switch 8 4 8 hours