1.1500mah Capacity Battery Life 2.All - round protect 3.Build-in subwoofer trumpet 4.Multi-Color 5.High Quality

  

Specifications:

All-round to protect iphone4/4s, Shockproof and prevent fallingA built-in 1500 mah battery makes iphone4 be used double timeBP-4L universal battery, easy to replace battery.A built-in subwoofer trumpet, music movies and game sounds increased by 10 times.Handset on its side pillars, allowing you to watch more convenient browsing.GPS navigation as speaker. Make the voices clearer

Newest Portable Speaker For Apple iPhone 4 4S with Battery Pack