http://www.macnn.com/articles/09/08/30/usbfever.ships.new.battery/
USBfever iPhone battery adds second SIM card slot
updated 10:05 pm EDT, Sun August 30, 2009
USBfever ships new battery
USBfever has launched its latest iPhone accessory, an external battery featuring an integrated adapter for two SIM cards. The dual card capability is geared towards iPhone users that may need to switch phone companies when traveling between countries. The battery doubles as an iPhone case, while allowing users to sync the device without removing the battery.
The case integrates LED status indicators and a hidden USB cable for recharging both the internal and external batteries. USBFever claims the 1900mAh cells provide several additional days of standby time.
The new case works with the iPhone 3G or 3GS and can be purchased for $60.
Fresh-Faced Recruit
Joined: Aug 2001
sim card
would be a nice accessory for the Touch. :/