Power bank
Battery capacity: 4000 mAh 4400/5200mAh
Battery Cell Type: Grade A Li-polymer battery
Recycling life: ≥500 times
Colours available: Silvery / Black 
Size:115×60×15mm
Net Weight: 95g/pc
Input (Voltage/current/interface): 5V 1A / USB 2.0
Output (Voltage/current/interface): :  5V 1A /Micro USB
Charging Time:3-5 hours
Working Temperature: -10.C to + 55.C 
Compatibility: Mobiles phones, DC, MP3,MP4, tablet PC,GPS,etc