Feature:1. Monocrystalline solar panels have high conversion efficiency, providing 17%‑24% efficiency, while most solar panels are 15%.2. The dual output 5V 2.1A (maximum) USB output is compatible with mobile phones of various systems and can compete with most 5V devices.3. 18V 1.4A (maximum) DC output, suitable for your built in 12V battery, laptop computer, car battery and other 18V and 12V input devices.4. The angle adjustable bracket design allows you to achieve the best angle and efficiency through adjustment.5. Folding net of the storage bag is designed to avoid overheating of the equipment in the backpack due to direct sunlight.How to Use:Unfold the bag and place the solar panel facing the place where the solar energy is irradiated. The straps and hoop and lock can adjust the direction, stand up, and plug in the USB data cable after flushing, and you can charge it.Specification:Item Type: Foldable Solar Panel Material: Plastic, Canvas + PET + PVCFolded Size: Approx. 25 x 19 x 4.5cm/9.8 x 7.5 x 1.8inExpanded Size: Approx. 63 x 25 x 2cm/24.8 x 9.8 x 0.8inSolar Panel: 21W (Maximum)USB Output: 5V 0~2.1A (Maximum)DC Output: 18V 1.4A (Maximum)Built In Dual Output Voltage RegulatorPackage List:1 x Charging Bag1 x Adapter Cable1 x Set of Adapter1 x Manual