Features:

• Combines rechargeable external battery power concealed inside of a protective form-fitting case
• Full protection of a hard-shell case with an ultra-thin, light-weight, low-profile design
• Doubles the power available to rock, talk, surf and send
• Highly condensed lithium polymer battery delivers an incredible amount of juice in a small form factor
• Built in overcharge, short circuit and temperature protection
• Embedded electronics results in no signal interference with the iPhone 4
• Case design acts as a virtual speaker box, redirecting sound from the bottom of the iPhone 4 to the front, resulting in a richer, fuller sound quality
• Integrated LED status indicator tells you exactly how much “juice” is left and also displays how much time remains during the charging process.
• 500 milliamps fast charge technology, with an advanced battery for added safety, as well as 1500mAh capacity
• Soft-touch, rubberized finish and silver band that mirrors the aesthetic of the iPhone
• Included USB cable enables you to simultaneously charge and sync your iPhone 4 to iTunes without having to remove it from the juice pack