solar portable charger

This product will convert solar energy to electrical energy effectively. Make the sunlight that is enough in nature be used in our daily life. This Model is specially made to work together with our power supply for laptop and digital products. 
Features
High efficiency:Over 15%
Long life span: It is made of high quality solar silicon panel
Easy to use :Put the solar panel in the sunlight directly and connect to the sock. The indicator light of laptop will be red when in use.
Convenience: It is foldable.
Specification
open size: 480*460 mm
fold size: 220*150*25 mm
Power: 20W
Output: 18V/1.2A
Solar panel: polycrystalline silicon
Charging time about 4 hours (this depends on different kinds of laptops)
Advantages:
It is ideal for business trip, traveling, mountaineering, caravan, marine and camping use. The brighter the sunlight, the stronger the charging current.