Connection type: Apple 30-pin, Micro USB (Universal Serial Bus), Mini USB (Universal Serial Bus), NOKIACell type: Li-polymer Capacity (m Ah): 2000 Capacity Range (m Ah): 2000-4500 Charging Time (h): 4 Input Voltage (V): 5 Output Voltage (V): 5 Output Current (m A): 500 Dimensions (cm): 19.5 x 9.3 x 4.3 Weight (kg): 0.139