Color: black + green Material: Monocrystalline silicon Parameter: Solar panel power: 13W Solar cell: Monocrystalline silicon Solar panel size: 280 x 280 x 3mm Solar panel operating voltage: 18V Solar panel open circuit voltage: 21.6V Solar panel short circuit current: 0.720A (Max) Output port: Dual USB DC5521 female Product features: integrated 5V voltage regulator module Product use: charge 5V devices such as mobile phones and sports cameras and charge 12V car batteries such as cars and boat Package Contents: 1 x solar panel 4 x suction cups 1 x alligator clip 1 x charger 1 x 30A solar controller Only the above package content other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.