1. High solar energy convert efficiency: over than 15% 2. Solar energy board: 5.5/ 80mA 3. High capacity build in polymer batt Product DescriptionThis product is a multi-function solar emergency charger. Built in 1350mAh high capacity rechargeable polymer battery. You can charge your mobile phone, digital camera, PDA, MP3. MP4 whenever and wherever, style design and convenient to take it with you ...