Complete system for your kayak. 32W panel and 16AH waterproof Pelican case enclosed power center. Panel is waterproof. Power center can be stored in your watertight compartment or out in the elements (completely waterproof). Charge and run your GPS or cellphone directly from the power center. Panel weight 5 pounds. Power center weighs 12 pounds. Don't be without power and don't lose voltage ever again on the water. This system can power your laptop and many larger power consumption devices.