99digitals Fashion 7200mAh Portable External Battery Power Bank Charger for iPhone/4/4s/5/5s/6/iPad/Samsung S3/S4/S5/MP3 (Black) Built-in battery full charged time:7-8hours Output: DC 5V Input Voltage(Threshold):DC 5V0.25V Input Voltage(Standard): DC 5V0.25V Operating temp: 5-45