Battery2go - 1 year warranty - 3.7V Battery For Apple A1332, 616-0512, iPhone 4G 32GB, 616-0521 Capacity: 1420mAh / 5.25Wh Type: Li-Polymer Volts: 3.7V Size : 81.70 x 33.02 x 4.02mm Certificated with ISO9001, RoHS & CE;