It has a polycrystalline solar cell A-level chip, which can be used in mobile phones, power banks, etc.Adopting advanced polyethylene coating technology, the surface of the battery is sealed with epoxy resin and the color is beautiful.High stability and good durability.Lightweight and easy to carry. The conversion rate is high, the output efficiency is good, and the output is high. High stability, good durability and strong applicability，Scratch-resistant, non-foaming, easy to clean.It has strong resistance, can withstand different environments, and has good waterproof performance.Scope of application: Car batteries, automobiles, RVs, ships, airplanes, satellites, space stations, outdoor breeding, planting, tourism, solar street lights.Specification:Solar panel chip: PolysiliconPower: 10WVoltage: 5VCurrent: 2AOutput interface: Dual USB + DCSize: 220x190x2.5mm/8.66x7.48x0.1inTip:1. Before use, please ensure that the positive and negative poles of this product are connected to the corresponding ones of the load.2. If there is no professional and technical personnel, please do not try to change the circuit or use method of the product, disassemble the product or change the circuit without authorization, our company is not responsible.3. The best working time of the product is 9:00-17: 00 (the effect is better in sunny weather).Note:Please do not scratch the surface of the solar panel with objects.When charging the charger with solar energy, please place the solar panel facing up in direct sunlight to ensure the best charging effect.Please don't put the charger outdoors in rainy days. Solar energy is used for emergency charging to avoid short circuit. USB downward waterproof IP65 rating.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-3mm measur