MiLi Power Spring for iPhone 4

A lightweight but tough case meets functionality and stylish practicality in this rechargeable smart battery. Put simply, you can text, talk, surf and email for longer, making your iPhone even more of a tried and trusted friend. This amazing little pack of energy ensures you and your life keep right on track, while charging and syncing back at home or office couldn’t be easier.

Designed specifically for the iPhone 4 and 3Gs, all products have passed stringent tests in line with Apple’s industry-defining standards. Not only does your Power Spring keep you connected longer, it also serves to protect your iPhone, while the status indicator ensures you always know where you are when it comes making important calls, sending that urgent email or confirming that after work beer!