The nPower® PEG is a small, lightweight device that recharges your hand-held electronic devices from the kinetic energy you generate while walking, running, or biking. Just place your nPower® PEG in your backpack, briefcase, or purse and go about your daily activities. As you move, your PEG will continuously top-off its internal battery providing you with extra power when you need it. –When you’re on the go. And, if you’re in an emergency situation, shaking your nPower® PEG will give you the ability to call for help or get in touch with a loved one.