... buckle whole design 3W 4. 3W 4.5V Foldable Portable Solar Charger for Moblie Phones, MP3, MP4 Key Specifications/Special Features: ... and emergency purposesCustomized designslabels, sizes, actual solar panel power, voltage, current and solar light impact strength ranges are acceptedFeatureVery thin, ... transparent and smooth film 3W 4.5V Foldable Portable Solar Charger for Moblie Phones, MP3, MP4