Are you looking for a professional and practical solar panel kit? Our products will be your good choice. It has excellent durability and practicality. The reasonable design makes it easy to install and use, bringing you more convenience. This is a very efficient and practical solar panel kit, which will meet your needs very well. Features -Color: Black. -Material: Monocrystalline Silicon, ABS, Rubber, Copper. -Size: About 42.00X28.00X2.50cm/16.51X11.00X0.98in. - Waterproof design and high strength, can adapt to various complex and severe weather conditions. - Unique craftsmanship makes the components beautiful, strong in water resistance and easy to use. - High conversion rate, high output efficiency, small attenuation, good reliability and long life. - It has high light transmittance, is safe and reliable, is not afraid of high temperature, and has no of burning or explosion. - The design is waterproof, light and flexible, convenient and practical, it will be your good choice. Specification: Maximum power (pmax): 20W. Open circuit voltage : 20V. Maximum power voltage (vmpp): 18V. Short circuit current ( ): 1.1A. Maximum power current (impp): 0. . Output: USB 5V DC5521 18V. Standard Test Conditions: AM=1.5. Irradiance=1000W/square meters. temperature = 25 degree centigrade. Package list: 1 panel 1 charger 1 x battery clip 4 x suction cups 2 x 1 x manual