Features WATERPROOF: Compared to the PET outer layer used in most portable solar chargers, the weatherproof ETFE outer layer improves performance and durability, extending the life of the panel. EMERGENCY POWER: This solar panel ensures that you don't have to worry about running out of battery in your smartphone during long hikes or camping trips. EASY TO CARRY: Equipped with two hooks, making the portable solar charger perfect for hanging on a backpack to charge anywhere. MONOCRYSTALLINE SILICON: This type of solar panel is made of monocrystalline silicon, which has high conversion efficiency and excellent performance. MULTIPURPOSE: Perfect for camping, backpacking, hiking and outdoor adventures, this solar panel is a must have tool in case of emergency. Specification: Item Type: Foldable Solar Power Panel Material: Monocrystalline silicon, oxford cloth Rated Power: 21W Product Output: 2 x USB Product Specification: Waterproof Rating: IP65 Product Conversion Rate: 23.5% Product Output Voltage: 5V 2A Applicable to: Bike, mountaineering, hiking, camping, travel, etc. Product Features: 1. Used for charging cell phones, MP3, PAD or other USB charging devices. 2. Dual USB output ports, convenient for charging devices via USB charging cable. 3. You can put the battery plate in the sunlight to charge your device directly. 4. Perfect for outdoor cycling, hiking, camping, travel, etc. Folded Size: Approx. 28 x 20 x 3cm / 11 x 7.9 x 1.2in Package List: 1 x Foldable Solar Power Panel 1 x Multifunctional Interface 2 x Buckle Package List 1 x Foldable Solar Power Panel 1 x Multifunctional Interface 2 x Buckle