Specifications:
●100% brand new + high quality!
● for Iphone 4G 4GS
●extends the battery life of your for hours and provides a comfortable ergonomic design with the complete protection of a hard shell case
●all in an -thin, light-weight, low-profile design
●Up to 1700mAh capacity
●takes 2-3 hours for normal charging
●Standby time:270hours
Talk time: up to 6 hours on 3G/12 hours on 2G
Internet use: up to 5 hours on 3G/9hours on wifi
Audio playback: up to 36 hours
Video playback: up to 9 hours
●ON/OFF switch: charge / data transfer (selectable)
●LED indicator for remaining battery power
●USB-micro data cable included
●Protection cover design,Using the cell phone while charging
●Unique switch design,control the charging start at any time
●Size:128 x 69 x 10mm
●Weight:64g
●Color: as picture shows
●USB cable length: 85cm
Package includes:
●1x Rechargeable External Backup Battery Case For 4g/4gs
●1x USB-micro data cable
●1x user manual