99digitals&reg; 5200mAh Portable External Battery Power Bank Charger for iPhone 4 4s 5 5s Samsungs3 s4 s5 (Black) Circle life:500times Input:DC:5V0.2V/1000mA,Output:5V/1000MA or 2000mA Built-in battery full charged time:7-8hours Built-in battery:5200mAh Teamperature range:0-40