In order to improve the charging efficiency, the electromagnetic sheet of this product has been changed to use monocrystalline silicon, with better charging effect (all product quotations do not include shipping and tax). Foldable 20W USB solar panel Portable Foldable waterproof solar panel charger Mobile Power battery charger Packaging (neutral packaging) : 1X 20W solar panel 1X Instructions in Chinese and English 2X Mountaineering buckle Characteristics: 1. Made of high quality materials, environmental protection, waterproof, durable, sensitive. 2. It can be used to charge mobile phones, mobile power banks, etc. 3. Light weight, foldable, light weight and easy to carry. 4. Lightweight and ultra-thin, easy to store and install. 5. Suitable for outdoor activities, emergencies and outdoor work, even on cloudy days can provide continuous power. Specifications: Material: PET Color: Camo, black Waterproof class: IP65 Solar conversion rate: 18-19.5% Maximum power (pmax) : 20W Maximum power current (Imp) : 1A Number of batteries: 36 Output: USB5V Open circuit voltage (VOC) : 5V Package size: 200*140*35mm Expansion size: 440x165x3mm Folding size: 165x105x20mm Product net weight: 320g Packing weight: 350g Short circuit current (Isc) : 2000 hA Package size: 210*140*35mm Outer box size: 450*450*480mm, a box of 60, 20.5kg.