More than 2X your battery

Weight: 65g
Capacity: 1700mAh
Cell type: Li Polymer battery 
Dimension: 120*62*17 (mm)
Output voltage: 5V
Output current: 500 Ma max
Cycle life: 500times

Function& character:
power check& indication
power switch 
protective and powerful

Standby Time – Up to 210 hours
Talk Time – Up to 5 hours on 3G | Up to 10 hours on 2G
Internet Use – Up to 4.5 hours on 3G | Up to 7 hours on Wi-Fi
Audio Playback – Up to 28 hours
Video Playback – Up to 7 hours