1900mAh External Battery Case for iPhone 4- Black

1900mAh External Battery Case for iPhone 4- Black. With Power Residual Light + USB Cable

Features:

• Ultra slim external battery
• Excellent for long trips and as an emergency backup when your iPhone 4's battery drains on the go
• High capacity 1900 mAh rechargeable lithium battery
• Output: 5V/700 mAh max
• Works with iPhone 4
• LED residual battery instruction light
• Sync charging your iphone and this battery is allowed
• All phone ports can be reachable without moving this case on/off switch
• Comes with a usb cable

Specifications:

• Standby time: Up to 230 hours
• Talking time:Up to 6 hours
• Audio playback:Up to 30 hours
• Video Playback:Up to 8 hours
• Small Size:5.02 in x 2.41 in x 0.57 in