The Voltaic solar bags are solar chargers designed to charge virtually all handheld electronics. Embedded in the outside of these solar chargers are lightweight, tough, waterproof solar panels. The new Generator produces up to 15 watts, powerful enough to fully charge a typical laptop from a day of direct sunlight. The smaller bags produce 4 watts of power so 1 hour in direct sun will power over 3 hours of iPod play time or 1.5 hours of cell phone talk time. Visit voltaicsystems.com for more information.