Features: brand new and high quality High conversion rate,high efficiency output,excellent weak light effect. It is convenient, environmentally safe, and maintainable for your cellphone battery anywhere. Good texture, light and easy to carry, long service life. High sunshine absorption rate, good flexibility, not easy to for touch dust. Suitable for 5V battery, operating temperature 0-60℃, reflux for protection. Specifications: Material:Polysilicon Working Voltage: 5V Output Power: 2W Output Interface:USB Size:Approx.157x94mm/6.18x3.70in Cable Length:50cm/19.69in Net Weight:55g Package Includes: 1x Solar Panel note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.