Emergency Solar Charger with Keychain for Mobile Device, Smart Phone, MP3, PDA & Digital Camera,Black/Black 1200mAH high capacity built in lithium battery High solar energy convert effciency :over than 17% Solar Panel Specifications:5V/40mA Output voltage:5.0V+/0.2v;Output current:600mA (For a faster charge, please power-off your mobile device) Charging time :generally 80 min (charging time varies due to mobile phone brands)