High Energy Conversion Solar Panel Charger: Highly efficient SunPower panel, , up to 85% energy conversion rate in sufficient sunlight. And this special PET polymer surface protects it from occasional rain or wet Fog and all the ports are covered by a cloth flap and rubber cover to protect them from dust or water damage. Durable Advanced Single Crystal Panel: Compared with polycrystalline panels, VITCOCO single crystal solar charging panels can achieve higher conversion rates, are rugged and durable, are not easily damaged, and have a service life of up to 15 years and up to 25 years. Easy To Carry: Our foldable solar charger panel is small and light easy to fit into any camping backpack, traveling backpack. Made of waterproof material, provides complete waterproof performance (excluding USB output). Introduction 100% Brand new and high quality Includes solar panels only Specification Smartphone solar charger Colour: Black Input voltage: 5V/ 2A. Output current: 5V / 2.1A ( each port ). The scope of application: for iPad, for iPhone, other brand mobile phones, PSP, MP3, MP4 and other digital products. Features: 1.HIGH CONVERSION RATE High Quality monocrystalline silicon chip convert up to 85% of solar power to energy; conveniently charge up to devices simultaneously, great for any outdoor activities such as camping, climbing, hiking and more 2.PORTABLE AND LIGHTWEIGHT The ultra-thin and foldable design makes it easy to carry; make full use of the eyeholes and attach it with carabiners / ropes to your backpack whenever you go out 3.DIRT & SPLASH-PROOF The portable solar charger features an IPX4 waterproof rate, which is resistant to spraying water and dust, making it perfect for outdoor use