Developed for military purposes but excellent for personal use, this innovative, flexible solar panel charger is ideal for recharging the batteries in your FRS radios, GPS, MP3 player, camera, or just about anything else. The rugged solar panels are durable, splash proof, lightweight (4.5 oz.) and fold up for convenient carrying. The unit is very small and folds to the size of a compact wallet which makes it ideal for backpackers, hikers, or travelers. If panels are damaged, only the single cell that is damaged will be affected and the rest of the unit will function perfectly. The panels will charge 1 set of batteries in approximately 5 hours.