1.1900mAh build-in battery 2.OEM service available. 3. one year warranty. 4.CE,FCC,RoHS, 5. iPhone battery charger 1900mah portable mobile battery charger case for phonesFeature1.Capactiy 3200mAh Li-polymer built-in battery cell2.Matching iPhone 4/4s style design. Thin and Cool.3.Fully charged within 5-6 hours, more than two standby time for your iPhone 4/4s;4.Pure Hand Made, Luxury Rubber Oil ...