power bank case for iPhone 4/4S

Specifications:

For example: power bank case gives extra power to mobile Phone

Features:

*Strong,durable engineering material

protects your phone from bumps and scratching and gives a non-slip coating.

*Sync and Charge

Keep the case on all the time

*High capacity external battery

Doubles stand-by time for iPhone 4/s

*Cut outs for all the iPhone4(s)'s features.

Use your phone without removing it from the case

*Protective IC circuit

Efficiencytly avoid short-circuits,over-charging ,over discharging and malfunctioning evern under extreme conditions

*Bracket Stand

Built-in folding bracket frees your hand while enjoying movies