Fuel up from the power of the sun. Store solar power in the case, and turn it on when your ready to use backup on the go. The internal 2500 mAh battery provides over 100% extra power, the semi-rugged design protects your iPhone from nicks, scratches, and drops. Fusion’s solar panel provides power whenever you need it when access to an outlet is unavailable. Even in short solar exposure your provided with meaningful power! You can plug in and charge the internal battery through AC/DC/USB, or expose the solar module to direct sunlight. Be prepared for any emergency, anytime, anywhere!