The SolarRoll is the ultimate means of powering electronic equipment in the field. It rolls down to nearly nothing and fits in its own storage tube. Effective low-light performance, reverse flow protection, waterproof, UV transparent, Tefzel fluoropolymer construction for extreme durability. Link multiple like-units for more output. One year warranty. Includes: vehicle outlet cable, multi-link cable and battery clamp cable. 4.5 watt output, 12"x22", Wt: 6.4 oz.