Merlin Power Bank for iPhone - 600 mAh.
The Merlin portable charger is the ideal backup battery for your iPhone4/4S, iPod Touch and iPad. The compact size and slim shape make it convenient to carry on your key ring and take it anywhere and use it anytime.
Lightweight, compact and portable the Merlin iPhone 4/4S back-up charger easily fits on a key ring and provides up to 90 extra minutes of talk time*. For iPhone 4/4S, iPod Touch and iPad.
Super Slim Profile Take it anywhere - attaches to keyring.
Easy Charging Just plug in original phone adapter.
Dual Purpose Lets you charge and talk at the same time.
Rechargeable up to 500 times.