Interesting and functional case offers intrernet store USBFever for smartphone iPhone.
The main feature of the cover, which is called the «3-in-1 External Battery with DUAL SIM Function for iPhone 3G / 3Gs» is the availability of slots for the SIM-card. Despite the fact that both SIM-card can not operate simultaneously, such a decision would be convenient for people who use two SIM-cards.
Plus cover for the iPhone from USBFever has a built-in battery capacity of 1900 mAh, which will significantly extend the battery life smartphone. Cover does not prevent access to the connectors and the device is equipped with a USB-cable for recharging. To indicate the state provides LED-indicators.
Price 3-in-1 External Battery with DUAL SIM Function for iPhone 3G / 3Gs is $ 60.
Source: ®
