Never worry about having an electrical supply again for your hand held electronics or gadgets
. Where there is sun, there is a power supply. Just get out that wonderful solar powered backpack that you carry and charge them up. Solar powered back packs are great for these on the go, outdoor explorers or digital photographers. Don't be one of those cross country skiers, hikers, bikers, hunters out in the great outdoors and wilderness who got lost or run into some unexpected trouble just to learn that your GPS or cell phone has run out of juice. Everyone can benefit from this brilliant "green" technology of the solar powered backpack.