Third Rail System for iPhone 4/4S
The Third Rail System includes a slim case for the iPhone 4/4S and an optional modular battery, which can be purchased individually or as a set. The battery has a capacity of 1250 mAh and is slid onto the back of the case in order to charge the iPhone, up to six batteries can be combined. In addition, the battery is capable of charging other devices, such as smartphones by other manufacturers, using the included micro-USB cable.
Statement by the jury
»This universal charging device ensures the continued use of the smartphone in a particularly user-friendly way. Overall, the system impresses with its slim design. «