VTOMAN 400W Foldable Portable Solar PanelsCatch and Convert Sunlight Efficiently Made with monocrystalline solar cells, these solar panels feature adjustable stands. Harness the full potential of solar power, whether it's a sunny or cloudy day! Charger faster, wherever you go. we use monocrystalline silicon solar cells to achieve a higher solar conversion efficiency of up to 23%, so you get even more energy to recharge your portable power. Extensive Compatibility The VTOMAN 400W solar panel