... version& buckle whole design 24W 18V Multi-function Portable Solar Charger for Laptop, Mobile Phone, MP3, MP4 Key Specifications/ ... and emergency purposesCustomized designslabels, sizes, actual solar panel power, voltage, current and solar light impact strength ranges are acceptedFeatureVery thin, ... and smooth film 24W 18V Multi-function Portable Solar Charger for Laptop, Mobile Phone, MP3, MP4