Technical spec: *Cell: Li-ion Capacity: 2200mAh *Input: DC5.0V,1A *Output: DC5.5V, 500mA *Size: 62x68x16 mm *Weight: 68g *Charge time: 3.5 hours *Applications:iPod Touch, iPod Classic, iPod Nano, iPhone, iPhone3G, etc *Color:Black *Approval: CE Product Features External Backup Battery Charger for all generations of Apple iPhone including 3G and all iPods with universal dock connectors.