Available colors: black, red, or whiteCondition: newFree shipping and free returnsMophie Juice Pack Air iPhone Battery it virtually doubles its functional life with a built-in rechargeable battery. The cases emulate the iPhone aesthetic and provide unencumbered access to all ports, buttons, and self-destruct switches. A handy switch toggles between standby and charging modes, and four LEDs on the bottom alert users to the battery pack's power level, which can be recharged with an included USB cord. FeaturesSlim, durable case with built-in rechargeable battery can virtually double the life of the iPhone 4/4SHard-shell case protects against drops, scrapes, and texting bears Toggle between standby and charging modesFour LEDs alert users to the battery pack's power levelOffers access to all buttons and portsIncluded USB cab Reviews are very positive on Amazon but beware of counterfeits. Groupon assures authenticity.